54687644 has 36 divisors (see below), whose sum is σ = 106312752. Its totient is φ = 24594240.

The previous prime is 54687599. The next prime is 54687709. The reversal of 54687644 is 44678645.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 54687595 and 54687604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49304 + ... + 50400.

It is an arithmetic number, because the mean of its divisors is an integer number (2953132).

Almost surely, 2^54687644 is an apocalyptic number.

It is an amenable number.

54687644 is a deficient number, since it is larger than the sum of its proper divisors (51625108).

54687644 is a wasteful number, since it uses less digits than its factorization.

54687644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1213 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The square root of 54687644 is about 7395.1094650451. The cubic root of 54687644 is about 379.5739546414.

The spelling of 54687644 in words is "fifty-four million, six hundred eighty-seven thousand, six hundred forty-four".