404575065 has 24 divisors (see below), whose sum is σ = 703277640. Its totient is φ = 215153664.

The previous prime is 404575051. The next prime is 404575091. The reversal of 404575065 is 560575404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69355584 + 335219481 = 8328^2 + 18309^2 .

It is not a de Polignac number, because 404575065 - 2⁵ = 404575033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3151 + ... + 28619.

It is an arithmetic number, because the mean of its divisors is an integer number (29303235).

Almost surely, 2^404575065 is an apocalyptic number.

404575065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404575065 is a deficient number, since it is larger than the sum of its proper divisors (298702575).

404575065 is a wasteful number, since it uses less digits than its factorization.

404575065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25833 (or 25830 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 404575065 is about 20114.0514317728. The cubic root of 404575065 is about 739.6047712960.

The spelling of 404575065 in words is "four hundred four million, five hundred seventy-five thousand, sixty-five".