404300660 has 12 divisors (see below), whose sum is σ = 849031428. Its totient is φ = 161720256.

The previous prime is 404300651. The next prime is 404300669. The reversal of 404300660 is 66003404.

It is an interprime number because it is at equal distance from previous prime (404300651) and next prime (404300669).

It can be written as a sum of positive squares in 2 ways, for example, as 103347556 + 300953104 = 10166^2 + 17348^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404300669) 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, 10107497 + ... + 10107536.

It is an arithmetic number, because the mean of its divisors is an integer number (70752619).

Almost surely, 2^404300660 is an apocalyptic number.

It is an amenable number.

404300660 is an abundant number, since it is smaller than the sum of its proper divisors (444730768).

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

404300660 is a wasteful number, since it uses less digits than its factorization.

404300660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215042 (or 20215040 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 404300660 is about 20107.2290482801. The cubic root of 404300660 is about 739.4375199695.

The spelling of 404300660 in words is "four hundred four million, three hundred thousand, six hundred sixty".