667987325460 has 144 divisors (see below), whose sum is σ = 2493819409536. Its totient is φ = 140937981696.

The previous prime is 667987325443. The next prime is 667987325461. The reversal of 667987325460 is 64523789766.

667987325460 is a `hidden beast` number, since 6 + 6 + 7 + 9 + 87 + 3 + 2 + 546 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667987325461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20373954 + ... + 20406713.

It is an arithmetic number, because the mean of its divisors is an integer number (17318190344).

Almost surely, 2^667987325460 is an apocalyptic number.

667987325460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667987325460 is an abundant number, since it is smaller than the sum of its proper divisors (1825832084076).

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

667987325460 is a wasteful number, since it uses less digits than its factorization.

667987325460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40780702 (or 40780697 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 63.

The spelling of 667987325460 in words is "six hundred sixty-seven billion, nine hundred eighty-seven million, three hundred twenty-five thousand, four hundred sixty".