16906994 has 8 divisors (see below), whose sum is σ = 27311340. Its totient is φ = 7803216.

The previous prime is 16906973. The next prime is 16907057. The reversal of 16906994 is 49960961.

It can be written as a sum of positive squares in 2 ways, for example, as 16120225 + 786769 = 4015^2 + 887^2 .

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

It is a super-2 number, since 2×16906994² = 571692892232072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325109 + ... + 325160.

Almost surely, 2^16906994 is an apocalyptic number.

16906994 is a deficient number, since it is larger than the sum of its proper divisors (10404346).

16906994 is a wasteful number, since it uses less digits than its factorization.

16906994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650284.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 16906994 is about 4111.8115229178. The cubic root of 16906994 is about 256.6583903180.

The spelling of 16906994 in words is "sixteen million, nine hundred six thousand, nine hundred ninety-four".