5018644 has 6 divisors (see below), whose sum is σ = 8782634. Its totient is φ = 2509320.

The previous prime is 5018639. The next prime is 5018647. The reversal of 5018644 is 4468105.

It can be written as a sum of positive squares in only one way, i.e., 5008644 + 10000 = 2238^2 + 100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5018647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627327 + ... + 627334.

Almost surely, 2^5018644 is an apocalyptic number.

It is an amenable number.

5018644 is a deficient number, since it is larger than the sum of its proper divisors (3763990).

5018644 is a wasteful number, since it uses less digits than its factorization.

5018644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254665 (or 1254663 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 5018644 is about 2240.2330235938. The cubic root of 5018644 is about 171.2098696526.

The spelling of 5018644 in words is "five million, eighteen thousand, six hundred forty-four".