668277 has 16 divisors (see below), whose sum is σ = 1010880. Its totient is φ = 436176.

The previous prime is 668273. The next prime is 668303. The reversal of 668277 is 772866.

668277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 668277 - 2² = 668273 is a prime.

668277 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (63180).

2⁶⁶⁸²⁷⁷ is an apocalyptic number.

It is an amenable number.

668277 is a deficient number, since it is larger than the sum of its proper divisors (342603).

668277 is a wasteful number, since it uses less digits than its factorization.

668277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 523 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 668277 is about 817.4821098960. The cubic root of 668277 is about 87.4283277030.

The spelling of 668277 in words is "six hundred sixty-eight thousand, two hundred seventy-seven".