6623538372 has 48 divisors (see below), whose sum is σ = 18733243200. Its totient is φ = 2007132480.

The previous prime is 6623538343. The next prime is 6623538373. The reversal of 6623538372 is 2738353266.

6623538372 is a `hidden beast` number, since 66 + 23 + 538 + 37 + 2 = 666.

It is a super-3 number, since 3×6623538372³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6623538373) 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, 2786497 + ... + 2788872.

It is an arithmetic number, because the mean of its divisors is an integer number (390275900).

Almost surely, 2^6623538372 is an apocalyptic number.

It is an amenable number.

6623538372 is an abundant number, since it is smaller than the sum of its proper divisors (12109704828).

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

6623538372 is a wasteful number, since it uses less digits than its factorization.

6623538372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575393 (or 5575385 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 6623538372 is about 81385.1237757860. The cubic root of 6623538372 is about 1878.0047463874.

The spelling of 6623538372 in words is "six billion, six hundred twenty-three million, five hundred thirty-eight thousand, three hundred seventy-two".