16616866 has 16 divisors (see below), whose sum is σ = 28600704. Its totient is φ = 7092864.

The previous prime is 16616851. The next prime is 16616903. The reversal of 16616866 is 66861661.

It is a super-2 number, since 2×16616866² = 552240471323912, which contains 22 as substring.

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, 1426 + ... + 5938.

It is an arithmetic number, because the mean of its divisors is an integer number (1787544).

Almost surely, 2^16616866 is an apocalyptic number.

16616866 is a deficient number, since it is larger than the sum of its proper divisors (11983838).

16616866 is a wasteful number, since it uses less digits than its factorization.

16616866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785.

The product of its digits is 62208, while the sum is 40.

The square root of 16616866 is about 4076.3790304632. The cubic root of 16616866 is about 255.1818055018.

The spelling of 16616866 in words is "sixteen million, six hundred sixteen thousand, eight hundred sixty-six".