668528703 has 12 divisors (see below), whose sum is σ = 969413328. Its totient is φ = 443950080.

The previous prime is 668528683. The next prime is 668528717. The reversal of 668528703 is 307825866.

It is not a de Polignac number, because 668528703 - 2⁶ = 668528639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668528743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142203 + ... + 146828.

It is an arithmetic number, because the mean of its divisors is an integer number (80784444).

Almost surely, 2^668528703 is an apocalyptic number.

668528703 is a deficient number, since it is larger than the sum of its proper divisors (300884625).

668528703 is a wasteful number, since it uses less digits than its factorization.

668528703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289294 (or 289291 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 668528703 is about 25855.9220102475. The cubic root of 668528703 is about 874.3930279768.

The spelling of 668528703 in words is "six hundred sixty-eight million, five hundred twenty-eight thousand, seven hundred three".