16992361 has 8 divisors (see below), whose sum is σ = 17514504. Its totient is φ = 16473600.

The previous prime is 16992329. The next prime is 16992397. The reversal of 16992361 is 16329961.

It can be written as a sum of positive squares in 4 ways, for example, as 670761 + 16321600 = 819^2 + 4040^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16992361 - 2⁵ = 16992329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16992361.

It is not an unprimeable number, because it can be changed into a prime (16996361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12411 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (2189313).

Almost surely, 2^16992361 is an apocalyptic number.

It is an amenable number.

16992361 is a deficient number, since it is larger than the sum of its proper divisors (522143).

16992361 is a wasteful number, since it uses less digits than its factorization.

16992361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its digits is 17496, while the sum is 37.

The square root of 16992361 is about 4122.1791567083. The cubic root of 16992361 is about 257.0896395308.

The spelling of 16992361 in words is "sixteen million, nine hundred ninety-two thousand, three hundred sixty-one".