16372645 has 4 divisors (see below), whose sum is σ = 19647180. Its totient is φ = 13098112.

The previous prime is 16372613. The next prime is 16372667. The reversal of 16372645 is 54627361.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10227204 + 6145441 = 3198^2 + 2479^2 .

It is a cyclic number.

It is not a de Polignac number, because 16372645 - 2⁵ = 16372613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16372645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637260 + ... + 1637269.

It is an arithmetic number, because the mean of its divisors is an integer number (4911795).

Almost surely, 2^16372645 is an apocalyptic number.

It is an amenable number.

16372645 is a deficient number, since it is larger than the sum of its proper divisors (3274535).

16372645 is an equidigital number, since it uses as much as digits as its factorization.

16372645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274534.

The product of its digits is 30240, while the sum is 34.

The square root of 16372645 is about 4046.3125188250. The cubic root of 16372645 is about 253.9254798233.

The spelling of 16372645 in words is "sixteen million, three hundred seventy-two thousand, six hundred forty-five".