667465774680 has 64 divisors (see below), whose sum is σ = 2035223532000. Its totient is φ = 175072988160.

The previous prime is 667465774663. The next prime is 667465774687. The reversal of 667465774680 is 86477564766.

667465774680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667465774687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45584605 + ... + 45599244.

Almost surely, 2^667465774680 is an apocalyptic number.

667465774680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667465774680 is an abundant number, since it is smaller than the sum of its proper divisors (1367757757320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667465774680 is a wasteful number, since it uses less digits than its factorization.

667465774680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91183924 (or 91183920 counting only the distinct ones).

The product of its (nonzero) digits is 284497920, while the sum is 66.

The spelling of 667465774680 in words is "six hundred sixty-seven billion, four hundred sixty-five million, seven hundred seventy-four thousand, six hundred eighty".