13555864 has 16 divisors (see below), whose sum is σ = 29048400. Its totient is φ = 5809632.

The previous prime is 13555859. The next prime is 13555877. The reversal of 13555864 is 46855531.

13555864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13555864² = 367522897572992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120979 + ... + 121090.

It is an arithmetic number, because the mean of its divisors is an integer number (1815525).

Almost surely, 2^13555864 is an apocalyptic number.

13555864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13555864 is an abundant number, since it is smaller than the sum of its proper divisors (15492536).

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

13555864 is a wasteful number, since it uses less digits than its factorization.

13555864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242082 (or 242078 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 13555864 is about 3681.8288933626. The cubic root of 13555864 is about 238.4381449556.

The spelling of 13555864 in words is "thirteen million, five hundred fifty-five thousand, eight hundred sixty-four".