668934 has 24 divisors (see below), whose sum is σ = 1656720. Its totient is φ = 191088.

The previous prime is 668929. The next prime is 668939. The reversal of 668934 is 439866.

It is an interprime number because it is at equal distance from previous prime (668929) and next prime (668939).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668939) 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, 2529 + ... + 2780.

It is an arithmetic number, because the mean of its divisors is an integer number (69030).

2⁶⁶⁸⁹³⁴ is an apocalyptic number.

668934 is an abundant number, since it is smaller than the sum of its proper divisors (987786).

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

668934 is a wasteful number, since it uses less digits than its factorization.

668934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324 (or 5321 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 668934 is about 817.8838548351. The cubic root of 668934 is about 87.4569693181.

The spelling of 668934 in words is "six hundred sixty-eight thousand, nine hundred thirty-four".