668570 has 16 divisors (see below), whose sum is σ = 1375488. Its totient is φ = 229200.

The previous prime is 668567. The next prime is 668579. The reversal of 668570 is 75866.

668570 is nontrivially palindromic in base 6.

668570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668579) 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, 4706 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (85968).

2⁶⁶⁸⁵⁷⁰ is an apocalyptic number.

668570 is an abundant number, since it is smaller than the sum of its proper divisors (706918).

It is a weird number, because it is abundant, but not a pseudoperfect number.

668570 is a wasteful number, since it uses less digits than its factorization.

668570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 668570 is about 817.6612990719. The cubic root of 668570 is about 87.4411032223.

Subtracting from 668570 its reverse (75866), we obtain a cube (592704 = 84³).

The spelling of 668570 in words is "six hundred sixty-eight thousand, five hundred seventy".