3215665530 has 96 divisors (see below), whose sum is σ = 10423790208. Its totient is φ = 668188800.

The previous prime is 3215665499. The next prime is 3215665553. The reversal of 3215665530 is 355665123.

3215665530 is a `hidden beast` number, since 32 + 15 + 66 + 553 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 225081 + ... + 238940.

It is an arithmetic number, because the mean of its divisors is an integer number (108581148).

Almost surely, 2^3215665530 is an apocalyptic number.

3215665530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3215665530 is an abundant number, since it is smaller than the sum of its proper divisors (7208124678).

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

3215665530 is a wasteful number, since it uses less digits than its factorization.

3215665530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464052 (or 464049 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 3215665530 is about 56706.8384765012. The cubic root of 3215665530 is about 1476.0133654903.

The spelling of 3215665530 in words is "three billion, two hundred fifteen million, six hundred sixty-five thousand, five hundred thirty".