668462 has 4 divisors (see below), whose sum is σ = 1002696. Its totient is φ = 334230.

The previous prime is 668417. The next prime is 668471. The reversal of 668462 is 264866.

It is a happy number.

668462 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167114 + ... + 167117.

It is an arithmetic number, because the mean of its divisors is an integer number (250674).

2⁶⁶⁸⁴⁶² is an apocalyptic number.

668462 is a deficient number, since it is larger than the sum of its proper divisors (334234).

668462 is a wasteful number, since it uses less digits than its factorization.

668462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334233.

The product of its digits is 13824, while the sum is 32.

The square root of 668462 is about 817.5952543894. The cubic root of 668462 is about 87.4363945916.

Adding to 668462 its product of digits (13824), we get a palindrome (682286).

The spelling of 668462 in words is "six hundred sixty-eight thousand, four hundred sixty-two".