3640563660 has 24 divisors (see below), whose sum is σ = 10193578416. Its totient is φ = 970816960.

The previous prime is 3640563659. The next prime is 3640563673. The reversal of 3640563660 is 663650463.

It is a happy number.

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, 30337971 + ... + 30338090.

It is an arithmetic number, because the mean of its divisors is an integer number (424732434).

Almost surely, 2^3640563660 is an apocalyptic number.

3640563660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3640563660 is an abundant number, since it is smaller than the sum of its proper divisors (6553014756).

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

3640563660 is a wasteful number, since it uses less digits than its factorization.

3640563660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60676073 (or 60676071 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 39.

The square root of 3640563660 is about 60337.0836219319. The cubic root of 3640563660 is about 1538.3537335370.

The spelling of 3640563660 in words is "three billion, six hundred forty million, five hundred sixty-three thousand, six hundred sixty".