660600016 has 20 divisors (see below), whose sum is σ = 1280891232. Its totient is φ = 330047456.

The previous prime is 660600011. The next prime is 660600023. The reversal of 660600016 is 610006066.

It is a super-2 number, since 2×660600016² = 872784762278400512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660600011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6771 + ... + 36973.

Almost surely, 2^660600016 is an apocalyptic number.

It is an amenable number.

660600016 is a deficient number, since it is larger than the sum of its proper divisors (620291216).

660600016 is a wasteful number, since it uses less digits than its factorization.

660600016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31578 (or 31572 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 660600016 is about 25702.1402999828. The cubic root of 660600016 is about 870.9225322294.

The spelling of 660600016 in words is "six hundred sixty million, six hundred thousand, sixteen".