6425679 has 32 divisors (see below), whose sum is σ = 9763264. Its totient is φ = 3732480.

The previous prime is 6425663. The next prime is 6425687. The reversal of 6425679 is 9765246.

It is not a de Polignac number, because 6425679 - 2⁴ = 6425663 is a prime.

It is a super-2 number, since 2×6425679² = 82578701222082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87987 + ... + 88059.

It is an arithmetic number, because the mean of its divisors is an integer number (305102).

Almost surely, 2^6425679 is an apocalyptic number.

6425679 is a deficient number, since it is larger than the sum of its proper divisors (3337585).

6425679 is a wasteful number, since it uses less digits than its factorization.

6425679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187.

The product of its digits is 90720, while the sum is 39.

The square root of 6425679 is about 2534.8923054047. The cubic root of 6425679 is about 185.9115373066.

The spelling of 6425679 in words is "six million, four hundred twenty-five thousand, six hundred seventy-nine".