13455684 has 54 divisors (see below), whose sum is σ = 37398270. Its totient is φ = 4076160.

The previous prime is 13455661. The next prime is 13455697. The reversal of 13455684 is 48655431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13176900 + 278784 = 3630^2 + 528^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2812 + ... + 5900.

Almost surely, 2^13455684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13455684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18699135).

13455684 is an abundant number, since it is smaller than the sum of its proper divisors (23942586).

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

13455684 is a wasteful number, since it uses less digits than its factorization.

13455684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121 (or 3105 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 13455684 is about 3668.1990131398. The cubic root of 13455684 is about 237.8493267536.

The spelling of 13455684 in words is "thirteen million, four hundred fifty-five thousand, six hundred eighty-four".