667812283 has 2 divisors, whose sum is σ = 667812284. Its totient is φ = 667812282.

The previous prime is 667812281. The next prime is 667812307. The reversal of 667812283 is 382218766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667812283 - 2¹ = 667812281 is a prime.

It is a super-3 number, since 3×667812283³ (a number of 27 digits) contains 333 as substring.

Together with 667812281, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (667812281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333906141 + 333906142.

It is an arithmetic number, because the mean of its divisors is an integer number (333906142).

Almost surely, 2^667812283 is an apocalyptic number.

667812283 is a deficient number, since it is larger than the sum of its proper divisors (1).

667812283 is an equidigital number, since it uses as much as digits as its factorization.

667812283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 667812283 is about 25842.0642170861. The cubic root of 667812283 is about 874.0805724043.

The spelling of 667812283 in words is "six hundred sixty-seven million, eight hundred twelve thousand, two hundred eighty-three".