67664264 has 16 divisors (see below), whose sum is σ = 126959820. Its totient is φ = 33808320.

The previous prime is 67664249. The next prime is 67664269. The reversal of 67664264 is 46246676.

It can be written as a sum of positive squares in 2 ways, for example, as 61622500 + 6041764 = 7850^2 + 2458^2 .

It is not an unprimeable number, because it can be changed into a prime (67664269) 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, 16922 + ... + 20534.

Almost surely, 2^67664264 is an apocalyptic number.

It is an amenable number.

67664264 is a deficient number, since it is larger than the sum of its proper divisors (59295556).

67664264 is a wasteful number, since it uses less digits than its factorization.

67664264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960 (or 5956 counting only the distinct ones).

The product of its digits is 290304, while the sum is 41.

The square root of 67664264 is about 8225.8290767557. The cubic root of 67664264 is about 407.4926572253.

The spelling of 67664264 in words is "sixty-seven million, six hundred sixty-four thousand, two hundred sixty-four".