663824466 has 24 divisors (see below), whose sum is σ = 1522892124. Its totient is φ = 208258560.

The previous prime is 663824461. The next prime is 663824467. The reversal of 663824466 is 664428366.

663824466 is a `hidden beast` number, since 6 + 638 + 2 + 4 + 4 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 651015225 + 12809241 = 25515^2 + 3579^2 .

It is not an unprimeable number, because it can be changed into a prime (663824461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1084375 + ... + 1084986.

Almost surely, 2^663824466 is an apocalyptic number.

663824466 is an abundant number, since it is smaller than the sum of its proper divisors (859067658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663824466 is a wasteful number, since it uses less digits than its factorization.

663824466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169386 (or 2169383 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The square root of 663824466 is about 25764.7912081585. The cubic root of 663824466 is about 872.3372508376.

The spelling of 663824466 in words is "six hundred sixty-three million, eight hundred twenty-four thousand, four hundred sixty-six".