770664531 has 64 divisors (see below), whose sum is σ = 1316689920. Its totient is φ = 389975040.

The previous prime is 770664493. The next prime is 770664541. The reversal of 770664531 is 135466077.

It is not a de Polignac number, because 770664531 - 2¹⁸ = 770402387 is a prime.

It is a super-2 number, since 2×770664531² = 1187847638682899922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 770664531.

It is not an unprimeable number, because it can be changed into a prime (770664541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2462031 + ... + 2462343.

It is an arithmetic number, because the mean of its divisors is an integer number (20573280).

Almost surely, 2^770664531 is an apocalyptic number.

770664531 is a deficient number, since it is larger than the sum of its proper divisors (546025389).

770664531 is a wasteful number, since it uses less digits than its factorization.

770664531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 770664531 is about 27760.8452861220. The cubic root of 770664531 is about 916.8292433333.

The spelling of 770664531 in words is "seven hundred seventy million, six hundred sixty-four thousand, five hundred thirty-one".