667467897 has 8 divisors (see below), whose sum is σ = 891262944. Its totient is φ = 444325728.

The previous prime is 667467883. The next prime is 667467943. The reversal of 667467897 is 798764766.

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

It is not a de Polignac number, because 667467897 - 2⁸ = 667467641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667467897.

It is not an unprimeable number, because it can be changed into a prime (667467847) 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, 160828 + ... + 164925.

It is an arithmetic number, because the mean of its divisors is an integer number (111407868).

Almost surely, 2^667467897 is an apocalyptic number.

It is an amenable number.

667467897 is a deficient number, since it is larger than the sum of its proper divisors (223795047).

667467897 is a wasteful number, since it uses less digits than its factorization.

667467897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326439.

The product of its digits is 21337344, while the sum is 60.

The square root of 667467897 is about 25835.4000743166. The cubic root of 667467897 is about 873.9302942102.

The spelling of 667467897 in words is "six hundred sixty-seven million, four hundred sixty-seven thousand, eight hundred ninety-seven".