16994665 has 16 divisors (see below), whose sum is σ = 21321216. Its totient is φ = 12988800.

The previous prime is 16994657. The next prime is 16994671. The reversal of 16994665 is 56649961.

It is not a de Polignac number, because 16994665 - 2³ = 16994657 is a prime.

It is a Duffinian number.

Its product of digits (349920) is a multiple of the sum of its prime divisors (1440).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12205 + ... + 13525.

It is an arithmetic number, because the mean of its divisors is an integer number (1332576).

Almost surely, 2^16994665 is an apocalyptic number.

It is an amenable number.

16994665 is a deficient number, since it is larger than the sum of its proper divisors (4326551).

16994665 is a wasteful number, since it uses less digits than its factorization.

16994665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440.

The product of its digits is 349920, while the sum is 46.

The square root of 16994665 is about 4122.4586110718. The cubic root of 16994665 is about 257.1012586295.

The spelling of 16994665 in words is "sixteen million, nine hundred ninety-four thousand, six hundred sixty-five".