3636062720 has 80 divisors (see below), whose sum is σ = 8747975808. Its totient is φ = 1449431040.

The previous prime is 3636062719. The next prime is 3636062723. The reversal of 3636062720 is 272606363.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (3636062723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793877 + ... + 798443.

Almost surely, 2^3636062720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3636062720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4373987904).

3636062720 is an abundant number, since it is smaller than the sum of its proper divisors (5111913088).

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

3636062720 is an equidigital number, since it uses as much as digits as its factorization.

3636062720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901 (or 4885 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 3636062720 is about 60299.7737972540. The cubic root of 3636062720 is about 1537.7195008624.

The spelling of 3636062720 in words is "three billion, six hundred thirty-six million, sixty-two thousand, seven hundred twenty".