13545864 has 24 divisors (see below), whose sum is σ = 36686910. Its totient is φ = 4515264.

The previous prime is 13545799. The next prime is 13545907. The reversal of 13545864 is 46854531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8749764 + 4796100 = 2958^2 + 2190^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93997 + ... + 94140.

Almost surely, 2^13545864 is an apocalyptic number.

It is an amenable number.

13545864 is an abundant number, since it is smaller than the sum of its proper divisors (23141046).

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

13545864 is a wasteful number, since it uses less digits than its factorization.

13545864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188149 (or 188142 counting only the distinct ones).

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

The square root of 13545864 is about 3680.4706220808. The cubic root of 13545864 is about 238.3794995359.

The spelling of 13545864 in words is "thirteen million, five hundred forty-five thousand, eight hundred sixty-four".