113621564 has 24 divisors (see below), whose sum is σ = 237124608. Its totient is φ = 46577520.

The previous prime is 113621531. The next prime is 113621569. The reversal of 113621564 is 465126311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113621569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87572 + ... + 88859.

It is an arithmetic number, because the mean of its divisors is an integer number (9880192).

Almost surely, 2^113621564 is an apocalyptic number.

113621564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

113621564 is an abundant number, since it is smaller than the sum of its proper divisors (123503044).

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

113621564 is a wasteful number, since it uses less digits than its factorization.

113621564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176465 (or 176463 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 113621564 is about 10659.3416307012. The cubic root of 113621564 is about 484.3436247953.

Adding to 113621564 its reverse (465126311), we get a palindrome (578747875).

The spelling of 113621564 in words is "one hundred thirteen million, six hundred twenty-one thousand, five hundred sixty-four".