564615666100660 has 48 divisors (see below), whose sum is σ = 1188776409758784. Its totient is φ = 225259567723008.

The previous prime is 564615666100649. The next prime is 564615666100667. The reversal of 564615666100660 is 66001666516465.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 564615666100595 and 564615666100604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (564615666100667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5706814 + ... + 34085173.

It is an arithmetic number, because the mean of its divisors is an integer number (24766175203308).

Almost surely, 2^{564615666100660} is an apocalyptic number.

It is an amenable number.

564615666100660 is an abundant number, since it is smaller than the sum of its proper divisors (624160743658124).

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

564615666100660 is a wasteful number, since it uses less digits than its factorization.

564615666100660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39793840 (or 39793838 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 564615666100660 in words is "five hundred sixty-four trillion, six hundred fifteen billion, six hundred sixty-six million, one hundred thousand, six hundred sixty".