667297267 has 16 divisors (see below), whose sum is σ = 822162880. Its totient is φ = 527409792.

The previous prime is 667297249. The next prime is 667297313. The reversal of 667297267 is 762792766.

It is not a de Polignac number, because 667297267 - 2²⁷ = 533079539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667297207) 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 in 15 ways as a sum of consecutive naturals, for example, 96109 + ... + 102817.

It is an arithmetic number, because the mean of its divisors is an integer number (51385180).

Almost surely, 2^667297267 is an apocalyptic number.

667297267 is a deficient number, since it is larger than the sum of its proper divisors (154865613).

667297267 is a wasteful number, since it uses less digits than its factorization.

667297267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822.

The product of its digits is 2667168, while the sum is 52.

The square root of 667297267 is about 25832.0976113052. The cubic root of 667297267 is about 873.8558180017.

The spelling of 667297267 in words is "six hundred sixty-seven million, two hundred ninety-seven thousand, two hundred sixty-seven".