73868644 has 12 divisors (see below), whose sum is σ = 131709564. Its totient is φ = 36237344.

The previous prime is 73868633. The next prime is 73868651. The reversal of 73868644 is 44686837.

It can be written as a sum of positive squares in 2 ways, for example, as 62726400 + 11142244 = 7920^2 + 3338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73868594 and 73868603.

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, 174007 + ... + 174430.

It is an arithmetic number, because the mean of its divisors is an integer number (10975797).

Almost surely, 2^73868644 is an apocalyptic number.

It is an amenable number.

73868644 is a deficient number, since it is larger than the sum of its proper divisors (57840920).

73868644 is a wasteful number, since it uses less digits than its factorization.

73868644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348494 (or 348492 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The square root of 73868644 is about 8594.6869634676. The cubic root of 73868644 is about 419.5850853310.

The spelling of 73868644 in words is "seventy-three million, eight hundred sixty-eight thousand, six hundred forty-four".