3641572660 has 48 divisors (see below), whose sum is σ = 8377250112. Its totient is φ = 1318694400.

The previous prime is 3641572639. The next prime is 3641572663. The reversal of 3641572660 is 662751463.

It is a super-2 number, since 2×3641572660² = 26522102876118951200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641572663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18679 + ... + 87361.

It is an arithmetic number, because the mean of its divisors is an integer number (174526044).

Almost surely, 2^3641572660 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 3641572660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4188625056).

3641572660 is an abundant number, since it is smaller than the sum of its proper divisors (4735677452).

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

3641572660 is a wasteful number, since it uses less digits than its factorization.

3641572660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68944 (or 68942 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 3641572660 is about 60345.4444013796. Note that the first 4 decimals coincide. The cubic root of 3641572660 is about 1538.4958411595.

The spelling of 3641572660 in words is "three billion, six hundred forty-one million, five hundred seventy-two thousand, six hundred sixty".