663420039 has 16 divisors (see below), whose sum is σ = 906960384. Its totient is φ = 431121600.

The previous prime is 663420011. The next prime is 663420041. The reversal of 663420039 is 930024366.

It is not a de Polignac number, because 663420039 - 2⁵ = 663420007 is a prime.

It is a super-2 number, since 2×663420039² = 880252296293523042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663419991 and 663420009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663428039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62274 + ... + 72144.

It is an arithmetic number, because the mean of its divisors is an integer number (56685024).

Almost surely, 2^663420039 is an apocalyptic number.

663420039 is a deficient number, since it is larger than the sum of its proper divisors (243540345).

663420039 is a wasteful number, since it uses less digits than its factorization.

663420039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 663420039 is about 25756.9415692159. The cubic root of 663420039 is about 872.1600612213.

The spelling of 663420039 in words is "six hundred sixty-three million, four hundred twenty thousand, thirty-nine".