770243664 has 20 divisors (see below), whose sum is σ = 1989796256. Its totient is φ = 256747872.

The previous prime is 770243653. The next prime is 770243681. The reversal of 770243664 is 466342077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8023324 + ... + 8023419.

Almost surely, 2^770243664 is an apocalyptic number.

It is an amenable number.

770243664 is an abundant number, since it is smaller than the sum of its proper divisors (1219552592).

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

770243664 is a wasteful number, since it uses less digits than its factorization.

770243664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16046754 (or 16046748 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 39.

The square root of 770243664 is about 27753.2640242549. The cubic root of 770243664 is about 916.6623166442.

The spelling of 770243664 in words is "seven hundred seventy million, two hundred forty-three thousand, six hundred sixty-four".