6425864 has 32 divisors (see below), whose sum is σ = 13112280. Its totient is φ = 2939904.

The previous prime is 6425863. The next prime is 6425869. The reversal of 6425864 is 4685246.

It can be written as a sum of positive squares in 4 ways, for example, as 6400900 + 24964 = 2530^2 + 158^2 .

It is not an unprimeable number, because it can be changed into a prime (6425863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4394 + ... + 5670.

Almost surely, 2^6425864 is an apocalyptic number.

It is an amenable number.

6425864 is an abundant number, since it is smaller than the sum of its proper divisors (6686416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6425864 is a wasteful number, since it uses less digits than its factorization.

6425864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1333 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 6425864 is about 2534.9287958442. The cubic root of 6425864 is about 185.9133214659.

The spelling of 6425864 in words is "six million, four hundred twenty-five thousand, eight hundred sixty-four".