67621264 has 20 divisors (see below), whose sum is σ = 131224860. Its totient is φ = 33756800.

The previous prime is 67621207. The next prime is 67621303. The reversal of 67621264 is 46212676.

It can be written as a sum of positive squares in 2 ways, for example, as 60964864 + 6656400 = 7808^2 + 2580^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8202 + ... + 14230.

It is an arithmetic number, because the mean of its divisors is an integer number (6561243).

Almost surely, 2^67621264 is an apocalyptic number.

It is an amenable number.

67621264 is a deficient number, since it is larger than the sum of its proper divisors (63603596).

67621264 is a wasteful number, since it uses less digits than its factorization.

67621264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738 (or 6732 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 67621264 is about 8223.2149430743. The cubic root of 67621264 is about 407.4063196902.

The spelling of 67621264 in words is "sixty-seven million, six hundred twenty-one thousand, two hundred sixty-four".