13564494 has 12 divisors (see below), whose sum is σ = 29389776. Its totient is φ = 4521492.

The previous prime is 13564483. The next prime is 13564517. The reversal of 13564494 is 49446531.

13564494 = 1840² + 1841² + ... + 1843².

13564494 is a `hidden beast` number, since 1 + 3 + 5 + 644 + 9 + 4 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 376774 + ... + 376809.

It is an arithmetic number, because the mean of its divisors is an integer number (2449148).

Almost surely, 2^13564494 is an apocalyptic number.

13564494 is an abundant number, since it is smaller than the sum of its proper divisors (15825282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13564494 is a wasteful number, since it uses less digits than its factorization.

13564494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753591 (or 753588 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 13564494 is about 3683.0006787944. Note that the first 3 decimals coincide. The cubic root of 13564494 is about 238.4887327720.

The spelling of 13564494 in words is "thirteen million, five hundred sixty-four thousand, four hundred ninety-four".