671983967 has 2 divisors, whose sum is σ = 671983968. Its totient is φ = 671983966.

The previous prime is 671983913. The next prime is 671984003. The reversal of 671983967 is 769389176.

671983967 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671983967 - 2¹⁰ = 671982943 is a prime.

It is a super-3 number, since 3×671983967³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671943967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335991983 + 335991984.

It is an arithmetic number, because the mean of its divisors is an integer number (335991984).

Almost surely, 2^671983967 is an apocalyptic number.

671983967 is a deficient number, since it is larger than the sum of its proper divisors (1).

671983967 is an equidigital number, since it uses as much as digits as its factorization.

671983967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The square root of 671983967 is about 25922.6535485856. The cubic root of 671983967 is about 875.8968619668.

The spelling of 671983967 in words is "six hundred seventy-one million, nine hundred eighty-three thousand, nine hundred sixty-seven".