663865411 has 12 divisors (see below), whose sum is σ = 730567936. Its totient is φ = 602799120.

The previous prime is 663865409. The next prime is 663865417. The reversal of 663865411 is 114568366.

It is not a de Polignac number, because 663865411 - 2¹ = 663865409 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663865417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117886 + ... + 123388.

Almost surely, 2^663865411 is an apocalyptic number.

663865411 is a deficient number, since it is larger than the sum of its proper divisors (66702525).

663865411 is a wasteful number, since it uses less digits than its factorization.

663865411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522 (or 6511 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 663865411 is about 25765.5857880235. The cubic root of 663865411 is about 872.3551858572.

The spelling of 663865411 in words is "six hundred sixty-three million, eight hundred sixty-five thousand, four hundred eleven".