668914232 has 64 divisors (see below), whose sum is σ = 1570104000. Its totient is φ = 260499456.

The previous prime is 668914223. The next prime is 668914241. The reversal of 668914232 is 232419866.

It is an interprime number because it is at equal distance from previous prime (668914223) and next prime (668914241).

It is a self number, because there is not a number n which added to its sum of digits gives 668914232.

It is a congruent number.

It is an unprimeable number.

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, 15494 + ... + 39722.

It is an arithmetic number, because the mean of its divisors is an integer number (24532875).

Almost surely, 2^668914232 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 668914232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (785052000).

668914232 is an abundant number, since it is smaller than the sum of its proper divisors (901189768).

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

668914232 is a wasteful number, since it uses less digits than its factorization.

668914232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24288 (or 24284 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 668914232 is about 25863.3762683838. The cubic root of 668914232 is about 874.5610781484.

The spelling of 668914232 in words is "six hundred sixty-eight million, nine hundred fourteen thousand, two hundred thirty-two".