16972651 has 4 divisors (see below), whose sum is σ = 16984552. Its totient is φ = 16960752.

The previous prime is 16972639. The next prime is 16972663. The reversal of 16972651 is 15627961.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (16972639) and next prime (16972663).

It is a cyclic number.

It is not a de Polignac number, because 16972651 - 2⁹ = 16972139 is a prime.

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 16972651.

It is not an unprimeable number, because it can be changed into a prime (16972051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3465 + ... + 6778.

It is an arithmetic number, because the mean of its divisors is an integer number (4246138).

Almost surely, 2^16972651 is an apocalyptic number.

16972651 is a deficient number, since it is larger than the sum of its proper divisors (11901).

16972651 is a wasteful number, since it uses less digits than its factorization.

16972651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900.

The product of its digits is 22680, while the sum is 37.

The square root of 16972651 is about 4119.7877372505. The cubic root of 16972651 is about 256.9901988218.

The spelling of 16972651 in words is "sixteen million, nine hundred seventy-two thousand, six hundred fifty-one".