16626685 has 8 divisors (see below), whose sum is σ = 19975680. Its totient is φ = 13285584.

The previous prime is 16626671. The next prime is 16626703. The reversal of 16626685 is 58662661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16626685 - 2⁷ = 16626557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4756 + ... + 7474.

It is an arithmetic number, because the mean of its divisors is an integer number (2496960).

Almost surely, 2^16626685 is an apocalyptic number.

It is an amenable number.

16626685 is a deficient number, since it is larger than the sum of its proper divisors (3348995).

16626685 is a wasteful number, since it uses less digits than its factorization.

16626685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947.

The product of its digits is 103680, while the sum is 40.

The square root of 16626685 is about 4077.5832302971. The cubic root of 16626685 is about 255.2320583950.

The spelling of 16626685 in words is "sixteen million, six hundred twenty-six thousand, six hundred eighty-five".