667560877 has 8 divisors (see below), whose sum is σ = 705768800. Its totient is φ = 629660304.

The previous prime is 667560871. The next prime is 667560911. The reversal of 667560877 is 778065766.

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

It is not a de Polignac number, because 667560877 - 2⁷ = 667560749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667560871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72363 + ... + 81064.

It is an arithmetic number, because the mean of its divisors is an integer number (88221100).

Almost surely, 2^667560877 is an apocalyptic number.

It is an amenable number.

667560877 is a deficient number, since it is larger than the sum of its proper divisors (38207923).

667560877 is a wasteful number, since it uses less digits than its factorization.

667560877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153675.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The square root of 667560877 is about 25837.1994805939. The cubic root of 667560877 is about 873.9708725742.

The spelling of 667560877 in words is "six hundred sixty-seven million, five hundred sixty thousand, eight hundred seventy-seven".