67661168 has 20 divisors (see below), whose sum is σ = 131778768. Its totient is φ = 33653760.

The previous prime is 67661117. The next prime is 67661171. The reversal of 67661168 is 86116676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7868 + ... + 14043.

Almost surely, 2^67661168 is an apocalyptic number.

It is an amenable number.

67661168 is a deficient number, since it is larger than the sum of its proper divisors (64117600).

67661168 is a wasteful number, since it uses less digits than its factorization.

67661168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22112 (or 22106 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 67661168 is about 8225.6408868853. The cubic root of 67661168 is about 407.4864421449.

The spelling of 67661168 in words is "sixty-seven million, six hundred sixty-one thousand, one hundred sixty-eight".