666620062422 has 16 divisors (see below), whose sum is σ = 1335120584880. Its totient is φ = 221893277472.

The previous prime is 666620062357. The next prime is 666620062447. The reversal of 666620062422 is 224260026666.

It is a super-2 number, since 2×666620062422² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78347893 + ... + 78356400.

It is an arithmetic number, because the mean of its divisors is an integer number (83445036555).

Almost surely, 2^666620062422 is an apocalyptic number.

666620062422 is an abundant number, since it is smaller than the sum of its proper divisors (668500522458).

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

666620062422 is a wasteful number, since it uses less digits than its factorization.

666620062422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156705007.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 666620062422 in words is "six hundred sixty-six billion, six hundred twenty million, sixty-two thousand, four hundred twenty-two".