67313864 has 8 divisors (see below), whose sum is σ = 126213510. Its totient is φ = 33656928.

The previous prime is 67313849. The next prime is 67313881. The reversal of 67313864 is 46831376.

It can be written as a sum of positive squares in only one way, i.e., 49589764 + 17724100 = 7042^2 + 4210^2 .

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

It is a super-2 number, since 2×67313864² = 9062312573220992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4207109 + ... + 4207124.

Almost surely, 2^67313864 is an apocalyptic number.

It is an amenable number.

67313864 is a deficient number, since it is larger than the sum of its proper divisors (58899646).

67313864 is a wasteful number, since it uses less digits than its factorization.

67313864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8414239 (or 8414235 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 67313864 is about 8204.5026662193. The cubic root of 67313864 is about 406.7880380656.

The spelling of 67313864 in words is "sixty-seven million, three hundred thirteen thousand, eight hundred sixty-four".