667475108687 has 8 divisors (see below), whose sum is σ = 670509739776. Its totient is φ = 664441304472.

The previous prime is 667475108633. The next prime is 667475108731. The reversal of 667475108687 is 786801574766.

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 667475108687 - 2⁸ = 667475108431 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 (667475108617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441178 + ... + 1847144.

It is an arithmetic number, because the mean of its divisors is an integer number (83813717472).

Almost surely, 2^667475108687 is an apocalyptic number.

667475108687 is a deficient number, since it is larger than the sum of its proper divisors (3034631089).

667475108687 is a wasteful number, since it uses less digits than its factorization.

667475108687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413437.

The product of its (nonzero) digits is 94832640, while the sum is 65.

The spelling of 667475108687 in words is "six hundred sixty-seven billion, four hundred seventy-five million, one hundred eight thousand, six hundred eighty-seven".