668714 has 8 divisors (see below), whose sum is σ = 1007748. Its totient is φ = 332800.

The previous prime is 668713. The next prime is 668719. The reversal of 668714 is 417866.

It can be written as a sum of positive squares in 2 ways, for example, as 667489 + 1225 = 817^2 + 35^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668714.

It is not an unprimeable number, because it can be changed into a prime (668713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 1164.

2⁶⁶⁸⁷¹⁴ is an apocalyptic number.

668714 is a deficient number, since it is larger than the sum of its proper divisors (339034).

668714 is a wasteful number, since it uses less digits than its factorization.

668714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its digits is 8064, while the sum is 32.

The square root of 668714 is about 817.7493503513. The cubic root of 668714 is about 87.4473806078.

Adding to 668714 its sum of digits (32), we get a triangular number (668746 = T₁₁₅₆).

The spelling of 668714 in words is "six hundred sixty-eight thousand, seven hundred fourteen".