672436871 has 2 divisors, whose sum is σ = 672436872. Its totient is φ = 672436870.

The previous prime is 672436837. The next prime is 672436873. The reversal of 672436871 is 178634276.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672436871 is a prime.

Together with 672436873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672436873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336218435 + 336218436.

It is an arithmetic number, because the mean of its divisors is an integer number (336218436).

Almost surely, 2^672436871 is an apocalyptic number.

672436871 is a deficient number, since it is larger than the sum of its proper divisors (1).

672436871 is an equidigital number, since it uses as much as digits as its factorization.

672436871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 672436871 is about 25931.3877569250. The cubic root of 672436871 is about 876.0935968708.

The spelling of 672436871 in words is "six hundred seventy-two million, four hundred thirty-six thousand, eight hundred seventy-one".