663426288 has 300 divisors, whose sum is σ = 2312536512. Its totient is φ = 182891520.

The previous prime is 663426233. The next prime is 663426293. The reversal of 663426288 is 882624366.

663426288 is a `hidden beast` number, since 6 + 634 + 2 + 6 + 2 + 8 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1968456 + ... + 1968792.

Almost surely, 2^663426288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663426288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156268256).

663426288 is an abundant number, since it is smaller than the sum of its proper divisors (1649110224).

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

663426288 is a wasteful number, since it uses less digits than its factorization.

663426288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 380 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 663426288 is about 25757.0628760346. The cubic root of 663426288 is about 872.1627996126.

The spelling of 663426288 in words is "six hundred sixty-three million, four hundred twenty-six thousand, two hundred eighty-eight".