3579520640 has 64 divisors (see below), whose sum is σ = 8568905760. Its totient is φ = 1429865472.

The previous prime is 3579520597. The next prime is 3579520657. The reversal of 3579520640 is 460259753.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525899 + ... + 532661.

Almost surely, 2^3579520640 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 3579520640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4284452880).

3579520640 is an abundant number, since it is smaller than the sum of its proper divisors (4989385120).

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

3579520640 is an equidigital number, since it uses as much as digits as its factorization.

3579520640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7609 (or 7597 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 3579520640 is about 59829.0952630909. The cubic root of 3579520640 is about 1529.7071277887.

The spelling of 3579520640 in words is "three billion, five hundred seventy-nine million, five hundred twenty thousand, six hundred forty".