672389671 has 2 divisors, whose sum is σ = 672389672. Its totient is φ = 672389670.

The previous prime is 672389657. The next prime is 672389681. The reversal of 672389671 is 176983276.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672389671 - 2¹¹ = 672387623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672389681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336194835 + 336194836.

It is an arithmetic number, because the mean of its divisors is an integer number (336194836).

Almost surely, 2^672389671 is an apocalyptic number.

672389671 is a deficient number, since it is larger than the sum of its proper divisors (1).

672389671 is an equidigital number, since it uses as much as digits as its factorization.

672389671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 49.

The square root of 672389671 is about 25930.4776469698. The cubic root of 672389671 is about 876.0730980021.

The spelling of 672389671 in words is "six hundred seventy-two million, three hundred eighty-nine thousand, six hundred seventy-one".