412665985 has 4 divisors (see below), whose sum is σ = 495199188. Its totient is φ = 330132784.

The previous prime is 412665971. The next prime is 412665989. The reversal of 412665985 is 589566214.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 175721536 + 236944449 = 13256^2 + 15393^2 .

It is a cyclic number.

It is not a de Polignac number, because 412665985 - 2⁷ = 412665857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (412665989) 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, 41266594 + ... + 41266603.

It is an arithmetic number, because the mean of its divisors is an integer number (123799797).

Almost surely, 2^412665985 is an apocalyptic number.

It is an amenable number.

412665985 is a deficient number, since it is larger than the sum of its proper divisors (82533203).

412665985 is an equidigital number, since it uses as much as digits as its factorization.

412665985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82533202.

The product of its digits is 518400, while the sum is 46.

The square root of 412665985 is about 20314.1818688324. The cubic root of 412665985 is about 744.5026093057.

The spelling of 412665985 in words is "four hundred twelve million, six hundred sixty-five thousand, nine hundred eighty-five".