13664250 has 48 divisors (see below), whose sum is σ = 36954216. Its totient is φ = 3643200.

The previous prime is 13664237. The next prime is 13664251. The reversal of 13664250 is 5246631.

13664250 is a `hidden beast` number, since 13 + 6 + 642 + 5 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7177041 + 6487209 = 2679^2 + 2547^2 .

It is not an unprimeable number, because it can be changed into a prime (13664251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 787 + ... + 5286.

Almost surely, 2^13664250 is an apocalyptic number.

13664250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13664250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18477108).

13664250 is an abundant number, since it is smaller than the sum of its proper divisors (23289966).

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

13664250 is a wasteful number, since it uses less digits than its factorization.

13664250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6096 (or 6083 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13664250 is about 3696.5186324432. The cubic root of 13664250 is about 239.0719367030.

The spelling of 13664250 in words is "thirteen million, six hundred sixty-four thousand, two hundred fifty".