37640985 has 16 divisors (see below), whose sum is σ = 62303040. Its totient is φ = 19382720.

The previous prime is 37640929. The next prime is 37641001. The reversal of 37640985 is 58904673.

It is a happy number.

It is not a de Polignac number, because 37640985 - 2¹⁶ = 37575449 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 42831 + ... + 43700.

It is an arithmetic number, because the mean of its divisors is an integer number (3893940).

Almost surely, 2^37640985 is an apocalyptic number.

It is an amenable number.

37640985 is a deficient number, since it is larger than the sum of its proper divisors (24662055).

37640985 is a wasteful number, since it uses less digits than its factorization.

37640985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86568.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 37640985 is about 6135.2249347518. The cubic root of 37640985 is about 335.1354171472.

The spelling of 37640985 in words is "thirty-seven million, six hundred forty thousand, nine hundred eighty-five".