667017660 has 24 divisors (see below), whose sum is σ = 1867649616. Its totient is φ = 177871360.

The previous prime is 667017653. The next prime is 667017683. The reversal of 667017660 is 66710766.

It is a congruent number.

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, 5558421 + ... + 5558540.

It is an arithmetic number, because the mean of its divisors is an integer number (77818734).

Almost surely, 2^667017660 is an apocalyptic number.

667017660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667017660 is an abundant number, since it is smaller than the sum of its proper divisors (1200631956).

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

667017660 is a wasteful number, since it uses less digits than its factorization.

667017660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116973 (or 11116971 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 667017660 is about 25826.6850369923. The cubic root of 667017660 is about 873.7337482983.

The spelling of 667017660 in words is "six hundred sixty-seven million, seventeen thousand, six hundred sixty".