6402578 has 32 divisors (see below), whose sum is σ = 11956224. Its totient is φ = 2503872.

The previous prime is 6402577. The next prime is 6402581. The reversal of 6402578 is 8752046.

It is not an unprimeable number, because it can be changed into a prime (6402577) 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, 22976 + ... + 23252.

It is an arithmetic number, because the mean of its divisors is an integer number (373632).

Almost surely, 2^6402578 is an apocalyptic number.

6402578 is a deficient number, since it is larger than the sum of its proper divisors (5553646).

6402578 is a wasteful number, since it uses less digits than its factorization.

6402578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 6402578 is about 2530.3315988226. The cubic root of 6402578 is about 185.6884791980.

The spelling of 6402578 in words is "six million, four hundred two thousand, five hundred seventy-eight".