70664914664 has 32 divisors (see below), whose sum is σ = 137953436040. Its totient is φ = 33905587200.

The previous prime is 70664914643. The next prime is 70664914667. The reversal of 70664914664 is 46641946607.

It can be written as a sum of positive squares in 4 ways, for example, as 4219541764 + 66445372900 = 64958^2 + 257770^2 .

It is not an unprimeable number, because it can be changed into a prime (70664914667) 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, 1745909 + ... + 1785924.

Almost surely, 2^70664914664 is an apocalyptic number.

It is an amenable number.

70664914664 is a deficient number, since it is larger than the sum of its proper divisors (67288521376).

70664914664 is a wasteful number, since it uses less digits than its factorization.

70664914664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531941 (or 3531937 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 70664914664 in words is "seventy billion, six hundred sixty-four million, nine hundred fourteen thousand, six hundred sixty-four".