406246865 has 16 divisors (see below), whose sum is σ = 505128528. Its totient is φ = 313399296.

The previous prime is 406246853. The next prime is 406246891. The reversal of 406246865 is 568642604.

It can be written as a sum of positive squares in 8 ways, for example, as 65918161 + 340328704 = 8119^2 + 18448^2 .

It is a cyclic number.

It is not a de Polignac number, because 406246865 - 2¹² = 406242769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11189 + ... + 30621.

It is an arithmetic number, because the mean of its divisors is an integer number (31570533).

Almost surely, 2^406246865 is an apocalyptic number.

It is an amenable number.

406246865 is a deficient number, since it is larger than the sum of its proper divisors (98881663).

406246865 is a wasteful number, since it uses less digits than its factorization.

406246865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19588.

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 406246865 is about 20155.5666008178. The cubic root of 406246865 is about 740.6221119841.

The spelling of 406246865 in words is "four hundred six million, two hundred forty-six thousand, eight hundred sixty-five".