667579067 has 2 divisors, whose sum is σ = 667579068. Its totient is φ = 667579066.

The previous prime is 667579063. The next prime is 667579109. The reversal of 667579067 is 760975766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667579067 - 2² = 667579063 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (667579063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333789533 + 333789534.

It is an arithmetic number, because the mean of its divisors is an integer number (333789534).

Almost surely, 2^667579067 is an apocalyptic number.

667579067 is a deficient number, since it is larger than the sum of its proper divisors (1).

667579067 is an equidigital number, since it uses as much as digits as its factorization.

667579067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3333960, while the sum is 53.

The square root of 667579067 is about 25837.5514900309. The cubic root of 667579067 is about 873.9788106197.

The spelling of 667579067 in words is "six hundred sixty-seven million, five hundred seventy-nine thousand, sixty-seven".