16626660 has 48 divisors (see below), whose sum is σ = 46842432. Its totient is φ = 4406400.

The previous prime is 16626641. The next prime is 16626671. The reversal of 16626660 is 6662661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10095 + ... + 11625.

It is an arithmetic number, because the mean of its divisors is an integer number (975884).

Almost surely, 2^16626660 is an apocalyptic number.

16626660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16626660 is an abundant number, since it is smaller than the sum of its proper divisors (30215772).

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

16626660 is a wasteful number, since it uses less digits than its factorization.

16626660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 16626660 is about 4077.5801647546. The cubic root of 16626660 is about 255.2319304721.

The spelling of 16626660 in words is "sixteen million, six hundred twenty-six thousand, six hundred sixty".