220628915684 has 12 divisors (see below), whose sum is σ = 386107549884. Its totient is φ = 110312472864.

The previous prime is 220628915669. The next prime is 220628915699. The reversal of 220628915684 is 486519826022.

It is an interprime number because it is at equal distance from previous prime (220628915669) and next prime (220628915699).

It can be written as a sum of positive squares in 2 ways, for example, as 104763563584 + 115865352100 = 323672^2 + 340390^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230327 + ... + 703070.

It is an arithmetic number, because the mean of its divisors is an integer number (32175629157).

Almost surely, 2^220628915684 is an apocalyptic number.

It is an amenable number.

220628915684 is a deficient number, since it is larger than the sum of its proper divisors (165478634200).

220628915684 is a wasteful number, since it uses less digits than its factorization.

220628915684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992494 (or 992492 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 220628915684 in words is "two hundred twenty billion, six hundred twenty-eight million, nine hundred fifteen thousand, six hundred eighty-four".