667262231 has 2 divisors, whose sum is σ = 667262232. Its totient is φ = 667262230.

The previous prime is 667262201. The next prime is 667262237. The reversal of 667262231 is 132262766.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667262231 is a prime.

It is a super-2 number, since 2×667262231² = 890477769838194722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 667262191 and 667262200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667262237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333631115 + 333631116.

It is an arithmetic number, because the mean of its divisors is an integer number (333631116).

Almost surely, 2^667262231 is an apocalyptic number.

667262231 is a deficient number, since it is larger than the sum of its proper divisors (1).

667262231 is an equidigital number, since it uses as much as digits as its factorization.

667262231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 667262231 is about 25831.4194538357. The cubic root of 667262231 is about 873.8405239942.

The spelling of 667262231 in words is "six hundred sixty-seven million, two hundred sixty-two thousand, two hundred thirty-one".