667652617 has 8 divisors (see below), whose sum is σ = 670340160. Its totient is φ = 664971120.

The previous prime is 667652603. The next prime is 667652641. The reversal of 667652617 is 716256766.

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

It is a cyclic number.

It is not a de Polignac number, because 667652617 - 2²³ = 659264009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667652417) 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, 411067 + ... + 412687.

It is an arithmetic number, because the mean of its divisors is an integer number (83792520).

Almost surely, 2^667652617 is an apocalyptic number.

It is an amenable number.

667652617 is a deficient number, since it is larger than the sum of its proper divisors (2687543).

667652617 is a wasteful number, since it uses less digits than its factorization.

667652617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023.

The product of its digits is 635040, while the sum is 46.

The square root of 667652617 is about 25838.9747668130. The cubic root of 667652617 is about 874.0109060843.

The spelling of 667652617 in words is "six hundred sixty-seven million, six hundred fifty-two thousand, six hundred seventeen".