667606630526660 has 24 divisors (see below), whose sum is σ = 1529426099025216. Its totient is φ = 242766047464160.

The previous prime is 667606630526651. The next prime is 667606630526677. The reversal of 667606630526660 is 66625036606766.

It is a super-2 number, since 2×667606630526660² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1517287796432 + ... + 1517287796871.

It is an arithmetic number, because the mean of its divisors is an integer number (63726087459384).

Almost surely, 2^{667606630526660} is an apocalyptic number.

It is an amenable number.

667606630526660 is an abundant number, since it is smaller than the sum of its proper divisors (861819468498556).

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

667606630526660 is a wasteful number, since it uses less digits than its factorization.

667606630526660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034575593323 (or 3034575593321 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 65.

The spelling of 667606630526660 in words is "six hundred sixty-seven trillion, six hundred six billion, six hundred thirty million, five hundred twenty-six thousand, six hundred sixty".