666620345302 has 16 divisors (see below), whose sum is σ = 1060510774752. Its totient is φ = 313591893120.

The previous prime is 666620345299. The next prime is 666620345309. The reversal of 666620345302 is 203543026666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666620345309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118782003 + ... + 118787614.

It is an arithmetic number, because the mean of its divisors is an integer number (66281923422).

Almost surely, 2^666620345302 is an apocalyptic number.

666620345302 is a deficient number, since it is larger than the sum of its proper divisors (393890429450).

666620345302 is a wasteful number, since it uses less digits than its factorization.

666620345302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237569703.

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 666620345302 in words is "six hundred sixty-six billion, six hundred twenty million, three hundred forty-five thousand, three hundred two".