67400664 has 16 divisors (see below), whose sum is σ = 168501720. Its totient is φ = 22466880.

The previous prime is 67400659. The next prime is 67400677. The reversal of 67400664 is 46600476.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404157 + ... + 1404204.

Almost surely, 2^67400664 is an apocalyptic number.

It is an amenable number.

67400664 is an abundant number, since it is smaller than the sum of its proper divisors (101101056).

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

67400664 is a wasteful number, since it uses less digits than its factorization.

67400664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808370 (or 2808366 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 67400664 is about 8209.7907403295. The cubic root of 67400664 is about 406.9628115502.

The spelling of 67400664 in words is "sixty-seven million, four hundred thousand, six hundred sixty-four".