668583528 has 32 divisors (see below), whose sum is σ = 1673332800. Its totient is φ = 222611328.

The previous prime is 668583523. The next prime is 668583529. The reversal of 668583528 is 825385866.

It is not an unprimeable number, because it can be changed into a prime (668583523) 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, 6900 + ... + 37212.

It is an arithmetic number, because the mean of its divisors is an integer number (52291650).

Almost surely, 2^668583528 is an apocalyptic number.

It is an amenable number.

668583528 is an abundant number, since it is smaller than the sum of its proper divisors (1004749272).

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

668583528 is a wasteful number, since it uses less digits than its factorization.

668583528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31241 (or 31237 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 51.

The square root of 668583528 is about 25856.9821905032. The cubic root of 668583528 is about 874.4169298612.

The spelling of 668583528 in words is "six hundred sixty-eight million, five hundred eighty-three thousand, five hundred twenty-eight".