667340746668 has 36 divisors (see below), whose sum is σ = 1695629485368. Its totient is φ = 221294338560.

The previous prime is 667340746603. The next prime is 667340746687. The reversal of 667340746668 is 866647043766.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48016998 + ... + 48030893.

It is an arithmetic number, because the mean of its divisors is an integer number (47100819038).

Almost surely, 2^667340746668 is an apocalyptic number.

It is an amenable number.

667340746668 is an abundant number, since it is smaller than the sum of its proper divisors (1028288738700).

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

667340746668 is a wasteful number, since it uses less digits than its factorization.

667340746668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96048094 (or 96048089 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 63.

The spelling of 667340746668 in words is "six hundred sixty-seven billion, three hundred forty million, seven hundred forty-six thousand, six hundred sixty-eight".