647306220402 has 48 divisors (see below), whose sum is σ = 1415873796480. Its totient is φ = 213712170336.

The previous prime is 647306220391. The next prime is 647306220403. The reversal of 647306220402 is 204022603746.

647306220402 is a `hidden beast` number, since 647 + 3 + 0 + 6 + 2 + 2 + 0 + 4 + 0 + 2 = 666.

It is a super-2 number, since 2×647306220402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (647306220403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5519943 + ... + 5635989.

It is an arithmetic number, because the mean of its divisors is an integer number (29497370760).

Almost surely, 2^647306220402 is an apocalyptic number.

647306220402 is an abundant number, since it is smaller than the sum of its proper divisors (768567576078).

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

647306220402 is a wasteful number, since it uses less digits than its factorization.

647306220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119007 (or 119004 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The spelling of 647306220402 in words is "six hundred forty-seven billion, three hundred six million, two hundred twenty thousand, four hundred two".