13078564 has 6 divisors (see below), whose sum is σ = 22887494. Its totient is φ = 6539280.

The previous prime is 13078561. The next prime is 13078567. The reversal of 13078564 is 46587031.

It is an interprime number because it is at equal distance from previous prime (13078561) and next prime (13078567).

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 1464100 = 3408^2 + 1210^2 .

It is not an unprimeable number, because it can be changed into a prime (13078561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1634817 + ... + 1634824.

Almost surely, 2^13078564 is an apocalyptic number.

It is an amenable number.

13078564 is a deficient number, since it is larger than the sum of its proper divisors (9808930).

13078564 is a wasteful number, since it uses less digits than its factorization.

13078564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269645 (or 3269643 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 13078564 is about 3616.4297311022. The cubic root of 13078564 is about 235.6061851075.

The spelling of 13078564 in words is "thirteen million, seventy-eight thousand, five hundred sixty-four".