16620668 has 24 divisors (see below), whose sum is σ = 30750720. Its totient is φ = 7838640.

The previous prime is 16620601. The next prime is 16620671. The reversal of 16620668 is 86602661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28823 + ... + 29393.

It is an arithmetic number, because the mean of its divisors is an integer number (1281280).

Almost surely, 2^16620668 is an apocalyptic number.

It is an amenable number.

16620668 is a deficient number, since it is larger than the sum of its proper divisors (14130052).

16620668 is a wasteful number, since it uses less digits than its factorization.

16620668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 16620668 is about 4076.8453490413. The cubic root of 16620668 is about 255.2012661959.

The spelling of 16620668 in words is "sixteen million, six hundred twenty thousand, six hundred sixty-eight".