667077367698 has 80 divisors (see below), whose sum is σ = 1798192461120. Its totient is φ = 180562289184.

The previous prime is 667077367687. The next prime is 667077367711. The reversal of 667077367698 is 896763770766.

667077367698 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15458761 + ... + 15501852.

It is an arithmetic number, because the mean of its divisors is an integer number (22477405764).

Almost surely, 2^667077367698 is an apocalyptic number.

667077367698 is an abundant number, since it is smaller than the sum of its proper divisors (1131115093422).

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

667077367698 is a wasteful number, since it uses less digits than its factorization.

667077367698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30960653 (or 30960644 counting only the distinct ones).

The product of its (nonzero) digits is 672126336, while the sum is 72.

The spelling of 667077367698 in words is "six hundred sixty-seven billion, seventy-seven million, three hundred sixty-seven thousand, six hundred ninety-eight".