770664556 has 24 divisors (see below), whose sum is σ = 1358668080. Its totient is φ = 382485312.

The previous prime is 770664551. The next prime is 770664569. The reversal of 770664556 is 655466077.

It is not an unprimeable number, because it can be changed into a prime (770664551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329166 + ... + 331498.

It is an arithmetic number, because the mean of its divisors is an integer number (56611170).

Almost surely, 2^770664556 is an apocalyptic number.

It is an amenable number.

770664556 is a deficient number, since it is larger than the sum of its proper divisors (588003524).

770664556 is a wasteful number, since it uses less digits than its factorization.

770664556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 46.

The square root of 770664556 is about 27760.8457363964. The cubic root of 770664556 is about 916.8292532471.

The spelling of 770664556 in words is "seven hundred seventy million, six hundred sixty-four thousand, five hundred fifty-six".