672707279 has 2 divisors, whose sum is σ = 672707280. Its totient is φ = 672707278.

The previous prime is 672707267. The next prime is 672707297. The reversal of 672707279 is 972707276.

Together with next prime (672707297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672707279 - 2⁴ = 672707263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672707219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336353639 + 336353640.

It is an arithmetic number, because the mean of its divisors is an integer number (336353640).

Almost surely, 2^672707279 is an apocalyptic number.

672707279 is a deficient number, since it is larger than the sum of its proper divisors (1).

672707279 is an equidigital number, since it uses as much as digits as its factorization.

672707279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518616, while the sum is 47.

The square root of 672707279 is about 25936.6011458711. The cubic root of 672707279 is about 876.2110160563.

The spelling of 672707279 in words is "six hundred seventy-two million, seven hundred seven thousand, two hundred seventy-nine".