6128631 has 6 divisors (see below), whose sum is σ = 8852480. Its totient is φ = 4085748.

The previous prime is 6128623. The next prime is 6128651. The reversal of 6128631 is 1368216.

6128631 is a `hidden beast` number, since 6 + 1 + 28 + 631 = 666.

It is not a de Polignac number, because 6128631 - 2³ = 6128623 is a prime.

It is a super-2 number, since 2×6128631² = 75120235868322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6128595 and 6128604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6128611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340471 + ... + 340488.

Almost surely, 2^6128631 is an apocalyptic number.

6128631 is a deficient number, since it is larger than the sum of its proper divisors (2723849).

6128631 is a wasteful number, since it uses less digits than its factorization.

6128631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680965 (or 680962 counting only the distinct ones).

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

The square root of 6128631 is about 2475.6071982445. The cubic root of 6128631 is about 183.0014332952.

The spelling of 6128631 in words is "six million, one hundred twenty-eight thousand, six hundred thirty-one".