620456885668 has 24 divisors (see below), whose sum is σ = 1087023386232. Its totient is φ = 309878901504.

The previous prime is 620456885641. The next prime is 620456885669. The reversal of 620456885668 is 866588654026.

It can be written as a sum of positive squares in 4 ways, for example, as 1138252644 + 619318633024 = 33738^2 + 786968^2 .

It is not an unprimeable number, because it can be changed into a prime (620456885669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25073830 + ... + 25098562.

It is an arithmetic number, because the mean of its divisors is an integer number (45292641093).

Almost surely, 2^620456885668 is an apocalyptic number.

It is an amenable number.

620456885668 is a deficient number, since it is larger than the sum of its proper divisors (466566500564).

620456885668 is a wasteful number, since it uses less digits than its factorization.

620456885668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31551 (or 31549 counting only the distinct ones).

The product of its (nonzero) digits is 132710400, while the sum is 64.

The spelling of 620456885668 in words is "six hundred twenty billion, four hundred fifty-six million, eight hundred eighty-five thousand, six hundred sixty-eight".