36687645 has 24 divisors (see below), whose sum is σ = 66358656. Its totient is φ = 18715488.

The previous prime is 36687619. The next prime is 36687667. The reversal of 36687645 is 54678663.

It is not a de Polignac number, because 36687645 - 2⁷ = 36687517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 36687645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16689 + ... + 18758.

It is an arithmetic number, because the mean of its divisors is an integer number (2764944).

Almost surely, 2^36687645 is an apocalyptic number.

It is an amenable number.

36687645 is a deficient number, since it is larger than the sum of its proper divisors (29671011).

36687645 is a wasteful number, since it uses less digits than its factorization.

36687645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35481 (or 35478 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 36687645 is about 6057.0326893620. The cubic root of 36687645 is about 332.2818438193.

The spelling of 36687645 in words is "thirty-six million, six hundred eighty-seven thousand, six hundred forty-five".