13064638 has 4 divisors (see below), whose sum is σ = 19596960. Its totient is φ = 6532318.

The previous prime is 13064633. The next prime is 13064641. The reversal of 13064638 is 83646031.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13064633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3266158 + ... + 3266161.

It is an arithmetic number, because the mean of its divisors is an integer number (4899240).

Almost surely, 2^13064638 is an apocalyptic number.

13064638 is a deficient number, since it is larger than the sum of its proper divisors (6532322).

13064638 is an equidigital number, since it uses as much as digits as its factorization.

13064638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6532321.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 13064638 is about 3614.5038387032. The cubic root of 13064638 is about 235.5225312503.

The spelling of 13064638 in words is "thirteen million, sixty-four thousand, six hundred thirty-eight".