668033288 has 32 divisors (see below), whose sum is σ = 1364088600. Its totient is φ = 304854528.

The previous prime is 668033281. The next prime is 668033329. The reversal of 668033288 is 882330866.

It can be written as a sum of positive squares in 4 ways, for example, as 203975524 + 464057764 = 14282^2 + 21542^2 .

It is not an unprimeable number, because it can be changed into a prime (668033281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26831 + ... + 45342.

Almost surely, 2^668033288 is an apocalyptic number.

It is an amenable number.

668033288 is an abundant number, since it is smaller than the sum of its proper divisors (696055312).

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

668033288 is a wasteful number, since it uses less digits than its factorization.

668033288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72281 (or 72277 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 668033288 is about 25846.3399343118. The cubic root of 668033288 is about 874.1769841634.

The spelling of 668033288 in words is "six hundred sixty-eight million, thirty-three thousand, two hundred eighty-eight".