666622602 has 32 divisors (see below), whose sum is σ = 1486882560. Its totient is φ = 221382720.

The previous prime is 666622601. The next prime is 666622637. The reversal of 666622602 is 206226666.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (666622601) 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, 8143 + ... + 37410.

It is an arithmetic number, because the mean of its divisors is an integer number (46465080).

Almost surely, 2^666622602 is an apocalyptic number.

666622602 is an abundant number, since it is smaller than the sum of its proper divisors (820259958).

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

666622602 is a wasteful number, since it uses less digits than its factorization.

666622602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45835 (or 45829 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 666622602 is about 25819.0356520146. The cubic root of 666622602 is about 873.5612172962.

The spelling of 666622602 in words is "six hundred sixty-six million, six hundred twenty-two thousand, six hundred two".