37640065 has 8 divisors (see below), whose sum is σ = 45498600. Its totient is φ = 29891712.

The previous prime is 37640059. The next prime is 37640077. The reversal of 37640065 is 56004673.

37640065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2676496 + 34963569 = 1636^2 + 5913^2 .

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 37640065 - 2⁵ = 37640033 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 26790 + ... + 28159.

It is an arithmetic number, because the mean of its divisors is an integer number (5687325).

Almost surely, 2^37640065 is an apocalyptic number.

It is an amenable number.

37640065 is a deficient number, since it is larger than the sum of its proper divisors (7858535).

37640065 is a wasteful number, since it uses less digits than its factorization.

37640065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55091.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 37640065 is about 6135.1499574175. The cubic root of 37640065 is about 335.1326867272.

The spelling of 37640065 in words is "thirty-seven million, six hundred forty thousand, sixty-five".