770856920 has 32 divisors (see below), whose sum is σ = 1736121600. Its totient is φ = 308041728.

The previous prime is 770856913. The next prime is 770856991. The reversal of 770856920 is 29658077.

It is a super-2 number, since 2×770856920² = 1188440782223772800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34616 + ... + 52344.

It is an arithmetic number, because the mean of its divisors is an integer number (54253800).

Almost surely, 2^770856920 is an apocalyptic number.

It is an amenable number.

770856920 is an abundant number, since it is smaller than the sum of its proper divisors (965264680).

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

770856920 is a wasteful number, since it uses less digits than its factorization.

770856920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18827 (or 18823 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 770856920 is about 27764.3101841195. The cubic root of 770856920 is about 916.9055295245.

The spelling of 770856920 in words is "seven hundred seventy million, eight hundred fifty-six thousand, nine hundred twenty".