5646636 has 36 divisors (see below), whose sum is σ = 14414400. Its totient is φ = 1863648.

The previous prime is 5646617. The next prime is 5646637. The reversal of 5646636 is 6366465.

5646636 is a `hidden beast` number, since 5 + 646 + 6 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 5646636.

It is not an unprimeable number, because it can be changed into a prime (5646637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3205 + ... + 4643.

It is an arithmetic number, because the mean of its divisors is an integer number (400400).

Almost surely, 2^5646636 is an apocalyptic number.

It is an amenable number.

5646636 is an abundant number, since it is smaller than the sum of its proper divisors (8767764).

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

5646636 is a wasteful number, since it uses less digits than its factorization.

5646636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558 (or 1553 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 5646636 is about 2376.2651367219. The cubic root of 5646636 is about 178.0723940683.

The spelling of 5646636 in words is "five million, six hundred forty-six thousand, six hundred thirty-six".