775399716 has 405 divisors, whose sum is σ = 2712362499. Its totient is φ = 192471552.

The previous prime is 775399711. The next prime is 775399721. The reversal of 775399716 is 617993577.

The square root of 775399716 is 27846.

It is a perfect power (a square), and thus also a powerful number.

775399716 is a `hidden beast` number, since 7 + 7 + 539 + 97 + 16 = 666.

775399716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (775399711) and next prime (775399721).

It can be written as a sum of positive squares in 4 ways, for example, as 7001316 + 768398400 = 2646^2 + 27720^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (2500470) is a multiple of the sum of its prime divisors (42).

It is not an unprimeable number, because it can be changed into a prime (775399711) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 45611740 + ... + 45611756.

Almost surely, 2^775399716 is an apocalyptic number.

775399716 is the 27846-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775399716

775399716 is an abundant number, since it is smaller than the sum of its proper divisors (1936962783).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775399716 is a wasteful number, since it uses less digits than its factorization.

775399716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 42 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 54.

The cubic root of 775399716 is about 918.7031649595.

The spelling of 775399716 in words is "seven hundred seventy-five million, three hundred ninety-nine thousand, seven hundred sixteen".