668227 has 4 divisors (see below), whose sum is σ = 763696. Its totient is φ = 572760.

The previous prime is 668221. The next prime is 668243. The reversal of 668227 is 722866.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722866 = 2 ⋅361433.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668227 is a prime.

It is a Duffinian number.

668227 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (668221) 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, 47724 + ... + 47737.

It is an arithmetic number, because the mean of its divisors is an integer number (190924).

2⁶⁶⁸²²⁷ is an apocalyptic number.

668227 is a deficient number, since it is larger than the sum of its proper divisors (95469).

668227 is an equidigital number, since it uses as much as digits as its factorization.

668227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95468.

The product of its digits is 8064, while the sum is 31.

The square root of 668227 is about 817.4515276149. The cubic root of 668227 is about 87.4261472072.

The spelling of 668227 in words is "six hundred sixty-eight thousand, two hundred twenty-seven".