6425878 has 16 divisors (see below), whose sum is σ = 10406880. Its totient is φ = 2966656.

The previous prime is 6425869. The next prime is 6425899. The reversal of 6425878 is 8785246.

It is a d-powerful number, because it can be written as 6² + 4² + 2¹³ + 5⁸ + 8² + 7⁸ + 8⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 6425878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075 + ... + 3742.

It is an arithmetic number, because the mean of its divisors is an integer number (650430).

Almost surely, 2^6425878 is an apocalyptic number.

6425878 is a deficient number, since it is larger than the sum of its proper divisors (3981002).

6425878 is a wasteful number, since it uses less digits than its factorization.

6425878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its digits is 107520, while the sum is 40.

The square root of 6425878 is about 2534.9315572615. The cubic root of 6425878 is about 185.9134564820.

The spelling of 6425878 in words is "six million, four hundred twenty-five thousand, eight hundred seventy-eight".