16979666 has 16 divisors (see below), whose sum is σ = 27917568. Its totient is φ = 7681200.

The previous prime is 16979659. The next prime is 16979671. The reversal of 16979666 is 66697961.

It is a happy 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, 3176 + ... + 6636.

It is an arithmetic number, because the mean of its divisors is an integer number (1744848).

Almost surely, 2^16979666 is an apocalyptic number.

16979666 is a deficient number, since it is larger than the sum of its proper divisors (10937902).

16979666 is a wasteful number, since it uses less digits than its factorization.

16979666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697.

The product of its digits is 734832, while the sum is 50.

The square root of 16979666 is about 4120.6390281120. The cubic root of 16979666 is about 257.0255996544.

The spelling of 16979666 in words is "sixteen million, nine hundred seventy-nine thousand, six hundred sixty-six".