660620422602 has 48 divisors (see below), whose sum is σ = 1643028334272. Its totient is φ = 187917192000.

The previous prime is 660620422601. The next prime is 660620422607. The reversal of 660620422602 is 206224026066.

It is a happy number.

660620422602 is a `hidden beast` number, since 6 + 6 + 0 + 6 + 2 + 0 + 42 + 2 + 602 = 666.

It is not an unprimeable number, because it can be changed into a prime (660620422601) 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 23 ways as a sum of consecutive naturals, for example, 11519899 + ... + 11577102.

It is an arithmetic number, because the mean of its divisors is an integer number (34229756964).

Almost surely, 2^660620422602 is an apocalyptic number.

660620422602 is an abundant number, since it is smaller than the sum of its proper divisors (982407911670).

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

660620422602 is a wasteful number, since it uses less digits than its factorization.

660620422602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23097243 (or 23097240 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 660620422602 its reverse (206224026066), we get a palindrome (866844448668).

The spelling of 660620422602 in words is "six hundred sixty billion, six hundred twenty million, four hundred twenty-two thousand, six hundred two".