660065696 has 24 divisors (see below), whose sum is σ = 1308119904. Its totient is φ = 327844800.

The previous prime is 660065669. The next prime is 660065701. The reversal of 660065696 is 696560066.

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, 63470 + ... + 73133.

It is an arithmetic number, because the mean of its divisors is an integer number (54504996).

Almost surely, 2^660065696 is an apocalyptic number.

It is an amenable number.

660065696 is a deficient number, since it is larger than the sum of its proper divisors (648054208).

660065696 is a wasteful number, since it uses less digits than its factorization.

660065696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136764 (or 136756 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 660065696 is about 25691.7437321798. The cubic root of 660065696 is about 870.6876564410.

The spelling of 660065696 in words is "six hundred sixty million, sixty-five thousand, six hundred ninety-six".