668035368 has 576 divisors, whose sum is σ = 2630983680. Its totient is φ = 148262400.

The previous prime is 668035363. The next prime is 668035409. The reversal of 668035368 is 863530866.

It is not an unprimeable number, because it can be changed into a prime (668035363) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 21549513 + ... + 21549543.

It is an arithmetic number, because the mean of its divisors is an integer number (4567680).

Almost surely, 2^668035368 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 668035368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315491840).

668035368 is an abundant number, since it is smaller than the sum of its proper divisors (1962948312).

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

668035368 is a wasteful number, since it uses less digits than its factorization.

668035368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 668035368 is about 25846.3801720860. The cubic root of 668035368 is about 874.1778914467.

The spelling of 668035368 in words is "six hundred sixty-eight million, thirty-five thousand, three hundred sixty-eight".