667735067 has 2 divisors, whose sum is σ = 667735068. Its totient is φ = 667735066.

The previous prime is 667735051. The next prime is 667735093. The reversal of 667735067 is 760537766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667735067 - 2⁴ = 667735051 is a prime.

It is not a weakly prime, because it can be changed into another prime (667735667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333867533 + 333867534.

It is an arithmetic number, because the mean of its divisors is an integer number (333867534).

Almost surely, 2^667735067 is an apocalyptic number.

667735067 is a deficient number, since it is larger than the sum of its proper divisors (1).

667735067 is an equidigital number, since it uses as much as digits as its factorization.

667735067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1111320, while the sum is 47.

The square root of 667735067 is about 25840.5701755979. The cubic root of 667735067 is about 874.0468824944.

The spelling of 667735067 in words is "six hundred sixty-seven million, seven hundred thirty-five thousand, sixty-seven".