6128639 has 16 divisors (see below), whose sum is σ = 6967296. Its totient is φ = 5342400.

The previous prime is 6128623. The next prime is 6128651. The reversal of 6128639 is 9368216.

It is a cyclic number.

It is not a de Polignac number, because 6128639 - 2⁴ = 6128623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6128599 and 6128608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6128039) 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, 48194 + ... + 48320.

It is an arithmetic number, because the mean of its divisors is an integer number (435456).

Almost surely, 2^6128639 is an apocalyptic number.

6128639 is a deficient number, since it is larger than the sum of its proper divisors (838657).

6128639 is a wasteful number, since it uses less digits than its factorization.

6128639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 15552, while the sum is 35.

The square root of 6128639 is about 2475.6088140092. The cubic root of 6128639 is about 183.0015129221.

The spelling of 6128639 in words is "six million, one hundred twenty-eight thousand, six hundred thirty-nine".