663456051 has 6 divisors (see below), whose sum is σ = 958325420. Its totient is φ = 442304028.

The previous prime is 663456029. The next prime is 663456061. The reversal of 663456051 is 150654366.

663456051 is a `hidden beast` number, since 6 + 6 + 3 + 45 + 605 + 1 = 666.

663456051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663456051 - 2²² = 659261747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663455997 and 663456015.

It is not an unprimeable number, because it can be changed into a prime (663456061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36858661 + ... + 36858678.

Almost surely, 2^663456051 is an apocalyptic number.

663456051 is a deficient number, since it is larger than the sum of its proper divisors (294869369).

663456051 is a wasteful number, since it uses less digits than its factorization.

663456051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73717345 (or 73717342 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 663456051 is about 25757.6406334121. The cubic root of 663456051 is about 872.1758419022.

The spelling of 663456051 in words is "six hundred sixty-three million, four hundred fifty-six thousand, fifty-one".