3636972 has 18 divisors (see below), whose sum is σ = 9193548. Its totient is φ = 1212312.

The previous prime is 3636947. The next prime is 3636973. The reversal of 3636972 is 2796363.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 101027 = 3636972 / (3 + 6 + 3 + 6 + 9 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (3636973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50478 + ... + 50549.

Almost surely, 2^3636972 is an apocalyptic number.

It is an amenable number.

3636972 is an abundant number, since it is smaller than the sum of its proper divisors (5556576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3636972 is a wasteful number, since it uses less digits than its factorization.

3636972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101037 (or 101032 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 3636972 is about 1907.0846861112. The cubic root of 3636972 is about 153.7847670732.

The spelling of 3636972 in words is "three million, six hundred thirty-six thousand, nine hundred seventy-two".