113647644 has 96 divisors (see below), whose sum is σ = 323527680. Its totient is φ = 34214400.

The previous prime is 113647631. The next prime is 113647649. The reversal of 113647644 is 446746311.

113647644 is a `hidden beast` number, since 1 + 1 + 3 + 6 + 4 + 7 + 644 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 113647599 and 113647608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113647649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321772 + ... + 322124.

It is an arithmetic number, because the mean of its divisors is an integer number (3370080).

Almost surely, 2^113647644 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 113647644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161763840).

113647644 is an abundant number, since it is smaller than the sum of its proper divisors (209880036).

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

113647644 is a wasteful number, since it uses less digits than its factorization.

113647644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 640 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 113647644 is about 10660.5649006045. The cubic root of 113647644 is about 484.3806797197.

The spelling of 113647644 in words is "one hundred thirteen million, six hundred forty-seven thousand, six hundred forty-four".