775257066 has 36 divisors (see below), whose sum is σ = 1695222438. Its totient is φ = 256056192.

The previous prime is 775257061. The next prime is 775257073. The reversal of 775257066 is 660752577.

775257066 is a `hidden beast` number, since 7 + 75 + 2 + 570 + 6 + 6 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 450500625 + 324756441 = 21225^2 + 18021^2 .

It is not an unprimeable number, because it can be changed into a prime (775257061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 228156 + ... + 231528.

Almost surely, 2^775257066 is an apocalyptic number.

775257066 is an abundant number, since it is smaller than the sum of its proper divisors (919965372).

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

775257066 is a wasteful number, since it uses less digits than its factorization.

775257066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3491 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The square root of 775257066 is about 27843.4384730047. The cubic root of 775257066 is about 918.6468236767.

The spelling of 775257066 in words is "seven hundred seventy-five million, two hundred fifty-seven thousand, sixty-six".