3640506216 has 32 divisors (see below), whose sum is σ = 9191383200. Its totient is φ = 1201486400.

The previous prime is 3640506209. The next prime is 3640506251. The reversal of 3640506216 is 6126050463.

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, 748506 + ... + 753353.

It is an arithmetic number, because the mean of its divisors is an integer number (287230725).

Almost surely, 2^3640506216 is an apocalyptic number.

It is an amenable number.

3640506216 is an abundant number, since it is smaller than the sum of its proper divisors (5550876984).

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

3640506216 is a wasteful number, since it uses less digits than its factorization.

3640506216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501969 (or 1501965 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 3640506216 is about 60336.6075943950. The cubic root of 3640506216 is about 1538.3456423305.

Adding to 3640506216 its reverse (6126050463), we get a palindrome (9766556679).

The spelling of 3640506216 in words is "three billion, six hundred forty million, five hundred six thousand, two hundred sixteen".