67564964 has 6 divisors (see below), whose sum is σ = 118238694. Its totient is φ = 33782480.

The previous prime is 67564951. The next prime is 67564979. The reversal of 67564964 is 46946576.

It can be written as a sum of positive squares in only one way, i.e., 40960000 + 26604964 = 6400^2 + 5158^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445617 + ... + 8445624.

It is an arithmetic number, because the mean of its divisors is an integer number (19706449).

Almost surely, 2^67564964 is an apocalyptic number.

It is an amenable number.

67564964 is a deficient number, since it is larger than the sum of its proper divisors (50673730).

67564964 is a wasteful number, since it uses less digits than its factorization.

67564964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16891245 (or 16891243 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 67564964 is about 8219.7909949098. The cubic root of 67564964 is about 407.2932224039.

The spelling of 67564964 in words is "sixty-seven million, five hundred sixty-four thousand, nine hundred sixty-four".