36731961 has 20 divisors (see below), whose sum is σ = 62710912. Its totient is φ = 20989368.

The previous prime is 36731939. The next prime is 36731969. The reversal of 36731961 is 16913763.

It is not a de Polignac number, because 36731961 - 2⁷ = 36731833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36731969) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31825 + ... + 32958.

Almost surely, 2^36731961 is an apocalyptic number.

It is an amenable number.

36731961 is a deficient number, since it is larger than the sum of its proper divisors (25978951).

36731961 is an equidigital number, since it uses as much as digits as its factorization.

36731961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64802 (or 64793 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 36731961 is about 6060.6898122243. The cubic root of 36731961 is about 332.4155807317.

The spelling of 36731961 in words is "thirty-six million, seven hundred thirty-one thousand, nine hundred sixty-one".