13650564 has 12 divisors (see below), whose sum is σ = 31851344. Its totient is φ = 4550184.

The previous prime is 13650563. The next prime is 13650583. The reversal of 13650564 is 46505631.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (13650563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568762 + ... + 568785.

Almost surely, 2^13650564 is an apocalyptic number.

It is an amenable number.

13650564 is an abundant number, since it is smaller than the sum of its proper divisors (18200780).

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

13650564 is a wasteful number, since it uses less digits than its factorization.

13650564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137554 (or 1137552 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 13650564 is about 3694.6669674004. Note that the first 3 decimals coincide. The cubic root of 13650564 is about 238.9920925472.

The spelling of 13650564 in words is "thirteen million, six hundred fifty thousand, five hundred sixty-four".