775316736 has 216 divisors, whose sum is σ = 2391480000. Its totient is φ = 240869376.

The previous prime is 775316723. The next prime is 775316749. The reversal of 775316736 is 637613577.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (775316723) and next prime (775316749).

It is a super-2 number, since 2×775316736² = 1202232082243387392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 775316691 and 775316700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3895965 + ... + 3896163.

Almost surely, 2^775316736 is an apocalyptic number.

775316736 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775316736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195740000).

775316736 is an abundant number, since it is smaller than the sum of its proper divisors (1616163264).

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

775316736 is a wasteful number, since it uses less digits than its factorization.

775316736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 312 counting only the distinct ones).

The product of its digits is 555660, while the sum is 45.

The square root of 775316736 is about 27844.5099795274. The cubic root of 775316736 is about 918.6703918806.

The spelling of 775316736 in words is "seven hundred seventy-five million, three hundred sixteen thousand, seven hundred thirty-six".