668628096 has 64 divisors (see below), whose sum is σ = 1782037920. Its totient is φ = 222124032.

The previous prime is 668628091. The next prime is 668628109. The reversal of 668628096 is 690826866.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (668628091) 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, 117411 + ... + 122973.

Almost surely, 2^668628096 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 668628096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891018960).

668628096 is an abundant number, since it is smaller than the sum of its proper divisors (1113409824).

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

668628096 is a wasteful number, since it uses less digits than its factorization.

668628096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893 (or 5881 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 668628096 is about 25857.8439936511. The cubic root of 668628096 is about 874.4363590704.

The spelling of 668628096 in words is "six hundred sixty-eight million, six hundred twenty-eight thousand, ninety-six".