667977102 has 24 divisors (see below), whose sum is σ = 1558613784. Its totient is φ = 205531344.

The previous prime is 667977041. The next prime is 667977197. The reversal of 667977102 is 201779766.

It is a congruent number.

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, 1427068 + ... + 1427535.

It is an arithmetic number, because the mean of its divisors is an integer number (64942241).

Almost surely, 2^667977102 is an apocalyptic number.

667977102 is an abundant number, since it is smaller than the sum of its proper divisors (890636682).

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

667977102 is a wasteful number, since it uses less digits than its factorization.

667977102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854624 (or 2854621 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 667977102 is about 25845.2529877345. The cubic root of 667977102 is about 874.1524754621.

The spelling of 667977102 in words is "six hundred sixty-seven million, nine hundred seventy-seven thousand, one hundred two".