37072645 has 4 divisors (see below), whose sum is σ = 44487180. Its totient is φ = 29658112.

The previous prime is 37072639. The next prime is 37072657. The reversal of 37072645 is 54627073.

It is a happy number.

37072645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 28227969 + 8844676 = 5313^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 37072645 - 2⁷ = 37072517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37072645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3707260 + ... + 3707269.

It is an arithmetic number, because the mean of its divisors is an integer number (11121795).

Almost surely, 2^37072645 is an apocalyptic number.

It is an amenable number.

37072645 is a deficient number, since it is larger than the sum of its proper divisors (7414535).

37072645 is an equidigital number, since it uses as much as digits as its factorization.

37072645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414534.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 37072645 is about 6088.7309843678. The cubic root of 37072645 is about 333.4401230065.

The spelling of 37072645 in words is "thirty-seven million, seventy-two thousand, six hundred forty-five".