16665992 has 16 divisors (see below), whose sum is σ = 35712960. Its totient is φ = 7142544.

The previous prime is 16665953. The next prime is 16666019. The reversal of 16665992 is 29956661.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148748 + ... + 148859.

It is an arithmetic number, because the mean of its divisors is an integer number (2232060).

Almost surely, 2^16665992 is an apocalyptic number.

It is an amenable number.

16665992 is an abundant number, since it is smaller than the sum of its proper divisors (19046968).

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

16665992 is a wasteful number, since it uses less digits than its factorization.

16665992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297620 (or 297616 counting only the distinct ones).

The product of its digits is 174960, while the sum is 44.

The square root of 16665992 is about 4082.4002743484. The cubic root of 16665992 is about 255.4330307285.

The spelling of 16665992 in words is "sixteen million, six hundred sixty-five thousand, nine hundred ninety-two".