113644 has 6 divisors (see below), whose sum is σ = 198884. Its totient is φ = 56820.

The previous prime is 113623. The next prime is 113647. The reversal of 113644 is 446311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (113647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14202 + ... + 14209.

2¹¹³⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

113644 is a deficient number, since it is larger than the sum of its proper divisors (85240).

113644 is a wasteful number, since it uses less digits than its factorization.

113644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28415 (or 28413 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 113644 is about 337.1112575990. Note that the first 3 decimals coincide. The cubic root of 113644 is about 48.4375502601.

Adding to 113644 its reverse (446311), we get a palindrome (559955).

It can be divided in two parts, 113 and 644, that added together give a palindrome (757).

The spelling of 113644 in words is "one hundred thirteen thousand, six hundred forty-four".