6628131 has 24 divisors (see below), whose sum is σ = 10221120. Its totient is φ = 4126896.

The previous prime is 6628123. The next prime is 6628133. The reversal of 6628131 is 1318266.

6628131 is a `hidden beast` number, since 6 + 628 + 1 + 31 = 666.

It is not a de Polignac number, because 6628131 - 2³ = 6628123 is a prime.

It is a super-2 number, since 2×6628131² = 87864241106322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6628095 and 6628104.

It is not an unprimeable number, because it can be changed into a prime (6628133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13960 + ... + 14426.

It is an arithmetic number, because the mean of its divisors is an integer number (425880).

Almost surely, 2^6628131 is an apocalyptic number.

6628131 is a deficient number, since it is larger than the sum of its proper divisors (3592989).

6628131 is a wasteful number, since it uses less digits than its factorization.

6628131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 572 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 6628131 is about 2574.5156826091. The cubic root of 6628131 is about 187.8438702983.

The spelling of 6628131 in words is "six million, six hundred twenty-eight thousand, one hundred thirty-one".