16666530 has 32 divisors (see below), whose sum is σ = 41292288. Its totient is φ = 4300800.

The previous prime is 16666523. The next prime is 16666547. The reversal of 16666530 is 3566661.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16666491 and 16666500.

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, 8031 + ... + 9890.

It is an arithmetic number, because the mean of its divisors is an integer number (1290384).

Almost surely, 2^16666530 is an apocalyptic number.

16666530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16666530 is an abundant number, since it is smaller than the sum of its proper divisors (24625758).

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

16666530 is a wasteful number, since it uses less digits than its factorization.

16666530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17962.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 16666530 is about 4082.4661664244. The cubic root of 16666530 is about 255.4357792696.

The spelling of 16666530 in words is "sixteen million, six hundred sixty-six thousand, five hundred thirty".