667975454876 has 6 divisors (see below), whose sum is σ = 1168957046040. Its totient is φ = 333987727436.

The previous prime is 667975454869. The next prime is 667975454897. The reversal of 667975454876 is 678454579766.

It is a super-2 number, since 2×667975454876² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 83496931856 + ... + 83496931863.

It is an arithmetic number, because the mean of its divisors is an integer number (194826174340).

Almost surely, 2^667975454876 is an apocalyptic number.

It is an amenable number.

667975454876 is a deficient number, since it is larger than the sum of its proper divisors (500981591164).

667975454876 is a wasteful number, since it uses less digits than its factorization.

667975454876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166993863723 (or 166993863721 counting only the distinct ones).

The product of its digits is 2133734400, while the sum is 74.

The spelling of 667975454876 in words is "six hundred sixty-seven billion, nine hundred seventy-five million, four hundred fifty-four thousand, eight hundred seventy-six".