16661732 has 12 divisors (see below), whose sum is σ = 29527680. Its totient is φ = 8225256.

The previous prime is 16661713. The next prime is 16661741. The reversal of 16661732 is 23716661.

It is a super-2 number, since 2×16661732² = 555226626479648, which contains 22 as substring.

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, 26048 + ... + 26679.

It is an arithmetic number, because the mean of its divisors is an integer number (2460640).

Almost surely, 2^16661732 is an apocalyptic number.

It is an amenable number.

16661732 is a deficient number, since it is larger than the sum of its proper divisors (12865948).

16661732 is a wasteful number, since it uses less digits than its factorization.

16661732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52810 (or 52808 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 16661732 is about 4081.8784891273. The cubic root of 16661732 is about 255.4112650986.

The spelling of 16661732 in words is "sixteen million, six hundred sixty-one thousand, seven hundred thirty-two".