6273648639 has 16 divisors (see below), whose sum is σ = 9446662240. Its totient is φ = 4113866880.

The previous prime is 6273648629. The next prime is 6273648643. The reversal of 6273648639 is 9368463726.

6273648639 is a `hidden beast` number, since 62 + 73 + 6 + 486 + 39 = 666.

It is not a de Polignac number, because 6273648639 - 2⁵ = 6273648607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6273648629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902922 + ... + 1906215.

It is an arithmetic number, because the mean of its divisors is an integer number (590416390).

Almost surely, 2^6273648639 is an apocalyptic number.

6273648639 is a deficient number, since it is larger than the sum of its proper divisors (3173013601).

6273648639 is a wasteful number, since it uses less digits than its factorization.

6273648639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3809207 (or 3809201 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 6273648639 is about 79206.3674144952. The cubic root of 6273648639 is about 1844.3360873844.

The spelling of 6273648639 in words is "six billion, two hundred seventy-three million, six hundred forty-eight thousand, six hundred thirty-nine".