36687231 has 36 divisors (see below), whose sum is σ = 64342512. Its totient is φ = 20047104.

The previous prime is 36687199. The next prime is 36687247. The reversal of 36687231 is 13278663.

It is a happy number.

It is not a de Polignac number, because 36687231 - 2⁵ = 36687199 is a prime.

It is a super-2 number, since 2×36687231² = 2691905836894722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36687281) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8335 + ... + 11951.

It is an arithmetic number, because the mean of its divisors is an integer number (1787292).

Almost surely, 2^36687231 is an apocalyptic number.

36687231 is a deficient number, since it is larger than the sum of its proper divisors (27655281).

36687231 is a wasteful number, since it uses less digits than its factorization.

36687231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660 (or 3650 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 36687231 is about 6056.9985141157. The cubic root of 36687231 is about 332.2805939417.

The spelling of 36687231 in words is "thirty-six million, six hundred eighty-seven thousand, two hundred thirty-one".