667682311 has 2 divisors, whose sum is σ = 667682312. Its totient is φ = 667682310.

The previous prime is 667682303. The next prime is 667682333. The reversal of 667682311 is 113286766.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667682311 - 2³ = 667682303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667682381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333841155 + 333841156.

It is an arithmetic number, because the mean of its divisors is an integer number (333841156).

Almost surely, 2^667682311 is an apocalyptic number.

667682311 is a deficient number, since it is larger than the sum of its proper divisors (1).

667682311 is an equidigital number, since it uses as much as digits as its factorization.

667682311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 667682311 is about 25839.5493575256. The cubic root of 667682311 is about 874.0238631693.

The spelling of 667682311 in words is "six hundred sixty-seven million, six hundred eighty-two thousand, three hundred eleven".