667680601 has 8 divisors (see below), whose sum is σ = 789376320. Its totient is φ = 552563088.

The previous prime is 667680589. The next prime is 667680617. The reversal of 667680601 is 106086766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667680601 - 2¹⁵ = 667647833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667680631) 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, 1644331 + ... + 1644736.

It is an arithmetic number, because the mean of its divisors is an integer number (98672040).

Almost surely, 2^667680601 is an apocalyptic number.

It is an amenable number.

667680601 is a deficient number, since it is larger than the sum of its proper divisors (121695719).

667680601 is a wasteful number, since it uses less digits than its factorization.

667680601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289103.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 667680601 is about 25839.5162686920. The cubic root of 667680601 is about 874.0231170150.

The spelling of 667680601 in words is "six hundred sixty-seven million, six hundred eighty thousand, six hundred one".