622685145620 has 48 divisors (see below), whose sum is σ = 1343096403600. Its totient is φ = 242321393664.

The previous prime is 622685145547. The next prime is 622685145637. The reversal of 622685145620 is 26541586226.

It can be written as a sum of positive squares in 8 ways, for example, as 220135502596 + 402549643024 = 469186^2 + 634468^2 .

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10663142 + ... + 10721378.

It is an arithmetic number, because the mean of its divisors is an integer number (27981175075).

Almost surely, 2^622685145620 is an apocalyptic number.

It is an amenable number.

622685145620 is an abundant number, since it is smaller than the sum of its proper divisors (720411257980).

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

622685145620 is a wasteful number, since it uses less digits than its factorization.

622685145620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72732 (or 72730 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 622685145620 in words is "six hundred twenty-two billion, six hundred eighty-five million, one hundred forty-five thousand, six hundred twenty".