67312984 has 16 divisors (see below), whose sum is σ = 126875520. Its totient is φ = 33479520.

The previous prime is 67312981. The next prime is 67313011. The reversal of 67312984 is 48921376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67312981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20499 + ... + 23554.

It is an arithmetic number, because the mean of its divisors is an integer number (7929720).

Almost surely, 2^67312984 is an apocalyptic number.

It is an amenable number.

67312984 is a deficient number, since it is larger than the sum of its proper divisors (59562536).

67312984 is a wasteful number, since it uses less digits than its factorization.

67312984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44250 (or 44246 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 67312984 is about 8204.4490369555. The cubic root of 67312984 is about 406.7862653994.

The spelling of 67312984 in words is "sixty-seven million, three hundred twelve thousand, nine hundred eighty-four".