554844636 has 72 divisors (see below), whose sum is σ = 1444716000. Its totient is φ = 179435520.

The previous prime is 554844613. The next prime is 554844643. The reversal of 554844636 is 636448455.

554844636 is a `hidden beast` number, since 5 + 5 + 4 + 8 + 4 + 4 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 554844591 and 554844600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292780 + ... + 294668.

It is an arithmetic number, because the mean of its divisors is an integer number (20065500).

Almost surely, 2^554844636 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 554844636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722358000).

554844636 is an abundant number, since it is smaller than the sum of its proper divisors (889871364).

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

554844636 is a wasteful number, since it uses less digits than its factorization.

554844636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2134 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The square root of 554844636 is about 23555.1403307219. The cubic root of 554844636 is about 821.7198860859.

The spelling of 554844636 in words is "five hundred fifty-four million, eight hundred forty-four thousand, six hundred thirty-six".