67664367 has 12 divisors (see below), whose sum is σ = 101987184. Its totient is φ = 43148160.

The previous prime is 67664353. The next prime is 67664381. The reversal of 67664367 is 76346676.

It is an interprime number because it is at equal distance from previous prime (67664353) and next prime (67664381).

It is not a de Polignac number, because 67664367 - 2⁷ = 67664239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67664347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163234 + ... + 163647.

It is an arithmetic number, because the mean of its divisors is an integer number (8498932).

Almost surely, 2^67664367 is an apocalyptic number.

67664367 is a deficient number, since it is larger than the sum of its proper divisors (34322817).

67664367 is a wasteful number, since it uses less digits than its factorization.

67664367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326910 (or 326907 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 67664367 is about 8225.8353375204. The cubic root of 67664367 is about 407.4928639899.

The spelling of 67664367 in words is "sixty-seven million, six hundred sixty-four thousand, three hundred sixty-seven".