16916965 has 16 divisors (see below), whose sum is σ = 21975408. Its totient is φ = 12427776.

The previous prime is 16916959. The next prime is 16916971. The reversal of 16916965 is 56961961.

It is an interprime number because it is at equal distance from previous prime (16916959) and next prime (16916971).

It can be written as a sum of positive squares in 8 ways, for example, as 7219969 + 9696996 = 2687^2 + 3114^2 .

It is a cyclic number.

It is not a de Polignac number, because 16916965 - 2²³ = 8528357 is a prime.

It is a super-2 number, since 2×16916965² = 572367409622450, which contains 22 as substring.

It is a congruent number.

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, 14587 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (1373463).

Almost surely, 2^16916965 is an apocalyptic number.

It is an amenable number.

16916965 is a deficient number, since it is larger than the sum of its proper divisors (5058443).

16916965 is a wasteful number, since it uses less digits than its factorization.

16916965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368.

The product of its digits is 87480, while the sum is 43.

The square root of 16916965 is about 4113.0238268213. The cubic root of 16916965 is about 256.7088356719.

The spelling of 16916965 in words is "sixteen million, nine hundred sixteen thousand, nine hundred sixty-five".