16665996 has 24 divisors (see below), whose sum is σ = 38973760. Its totient is φ = 5542992.

The previous prime is 16665953. The next prime is 16666019. The reversal of 16665996 is 69956661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5295 + ... + 7833.

Almost surely, 2^16665996 is an apocalyptic number.

It is an amenable number.

16665996 is an abundant number, since it is smaller than the sum of its proper divisors (22307764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16665996 is a wasteful number, since it uses less digits than its factorization.

16665996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093 (or 3091 counting only the distinct ones).

The product of its digits is 524880, while the sum is 48.

The square root of 16665996 is about 4082.4007642562. The cubic root of 16665996 is about 255.4330511639.

The spelling of 16665996 in words is "sixteen million, six hundred sixty-five thousand, nine hundred ninety-six".