667667662476 has 96 divisors (see below), whose sum is σ = 1639066968000. Its totient is φ = 211225297920.

The previous prime is 667667662457. The next prime is 667667662513. The reversal of 667667662476 is 674266766766.

It is a self number, because there is not a number n which added to its sum of digits gives 667667662476.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36779050 + ... + 36797198.

It is an arithmetic number, because the mean of its divisors is an integer number (17073614250).

Almost surely, 2^667667662476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667667662476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819533484000).

667667662476 is an abundant number, since it is smaller than the sum of its proper divisors (971399305524).

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

667667662476 is a wasteful number, since it uses less digits than its factorization.

667667662476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19979 (or 19977 counting only the distinct ones).

The product of its digits is 768144384, while the sum is 69.

The spelling of 667667662476 in words is "six hundred sixty-seven billion, six hundred sixty-seven million, six hundred sixty-two thousand, four hundred seventy-six".