108072644 has 6 divisors (see below), whose sum is σ = 189127134. Its totient is φ = 54036320.

The previous prime is 108072641. The next prime is 108072659. The reversal of 108072644 is 446270801.

It can be written as a sum of positive squares in only one way, i.e., 107329600 + 743044 = 10360^2 + 862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 108072644.

It is not an unprimeable number, because it can be changed into a prime (108072641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13509077 + ... + 13509084.

It is an arithmetic number, because the mean of its divisors is an integer number (31521189).

Almost surely, 2^108072644 is an apocalyptic number.

It is an amenable number.

108072644 is a deficient number, since it is larger than the sum of its proper divisors (81054490).

108072644 is a wasteful number, since it uses less digits than its factorization.

108072644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27018165 (or 27018163 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 108072644 is about 10395.7993439658. The cubic root of 108072644 is about 476.3270649579.

The spelling of 108072644 in words is "one hundred eight million, seventy-two thousand, six hundred forty-four".