3604636656 has 120 divisors (see below), whose sum is σ = 10197673200. Its totient is φ = 1188569088.

The previous prime is 3604636639. The next prime is 3604636657. The reversal of 3604636656 is 6566364063.

It is a happy number.

3604636656 is a `hidden beast` number, since 3 + 6 + 0 + 4 + 636 + 6 + 5 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3604636657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8027920 + ... + 8028368.

It is an arithmetic number, because the mean of its divisors is an integer number (84980610).

Almost surely, 2^3604636656 is an apocalyptic number.

3604636656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3604636656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5098836600).

3604636656 is an abundant number, since it is smaller than the sum of its proper divisors (6593036544).

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

3604636656 is a wasteful number, since it uses less digits than its factorization.

3604636656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The square root of 3604636656 is about 60038.6263666983. The cubic root of 3604636656 is about 1533.2765664344.

The spelling of 3604636656 in words is "three billion, six hundred four million, six hundred thirty-six thousand, six hundred fifty-six".