6400180 has 12 divisors (see below), whose sum is σ = 13440420. Its totient is φ = 2560064.

The previous prime is 6400159. The next prime is 6400183. The reversal of 6400180 is 810046.

It can be written as a sum of positive squares in 2 ways, for example, as 4857616 + 1542564 = 2204^2 + 1242^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159985 + ... + 160024.

It is an arithmetic number, because the mean of its divisors is an integer number (1120035).

Almost surely, 2^6400180 is an apocalyptic number.

It is an amenable number.

6400180 is an abundant number, since it is smaller than the sum of its proper divisors (7040240).

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

6400180 is a wasteful number, since it uses less digits than its factorization.

6400180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320018 (or 320016 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 6400180 is about 2529.8577035082. The cubic root of 6400180 is about 185.6652939240.

The spelling of 6400180 in words is "six million, four hundred thousand, one hundred eighty".