67872664 has 8 divisors (see below), whose sum is σ = 127261260. Its totient is φ = 33936328.

The previous prime is 67872661. The next prime is 67872691. The reversal of 67872664 is 46627876.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67872661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4242034 + ... + 4242049.

Almost surely, 2^67872664 is an apocalyptic number.

It is an amenable number.

67872664 is a deficient number, since it is larger than the sum of its proper divisors (59388596).

67872664 is a wasteful number, since it uses less digits than its factorization.

67872664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8484089 (or 8484085 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 67872664 is about 8238.4867542529. The cubic root of 67872664 is about 407.9105756855.

The spelling of 67872664 in words is "sixty-seven million, eight hundred seventy-two thousand, six hundred sixty-four".