770987904 has 64 divisors (see below), whose sum is σ = 2053362000. Its totient is φ = 256315392.

The previous prime is 770987839. The next prime is 770987923. The reversal of 770987904 is 409789077.

770987904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×770987904² = 1188844696228626432, 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, 154602 + ... + 159510.

Almost surely, 2^770987904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 770987904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1026681000).

770987904 is an abundant number, since it is smaller than the sum of its proper divisors (1282374096).

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

770987904 is a wasteful number, since it uses less digits than its factorization.

770987904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335 (or 5323 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 770987904 is about 27766.6689395757. The cubic root of 770987904 is about 916.9574601094.

The spelling of 770987904 in words is "seven hundred seventy million, nine hundred eighty-seven thousand, nine hundred four".