67664118 has 8 divisors (see below), whose sum is σ = 135328248. Its totient is φ = 22554704.

The previous prime is 67664101. The next prime is 67664123. The reversal of 67664118 is 81146676.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

67664118 is an admirable number.

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, 5638671 + ... + 5638682.

It is an arithmetic number, because the mean of its divisors is an integer number (16916031).

Almost surely, 2^67664118 is an apocalyptic number.

67664118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

67664118 is a wasteful number, since it uses less digits than its factorization.

67664118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11277358.

The product of its digits is 48384, while the sum is 39.

The square root of 67664118 is about 8225.8202022655. The cubic root of 67664118 is about 407.4923641411.

The spelling of 67664118 in words is "sixty-seven million, six hundred sixty-four thousand, one hundred eighteen".