671874911 has 2 divisors, whose sum is σ = 671874912. Its totient is φ = 671874910.

The previous prime is 671874899. The next prime is 671874961. The reversal of 671874911 is 119478176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671874911 - 2¹⁴ = 671858527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671874961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335937455 + 335937456.

It is an arithmetic number, because the mean of its divisors is an integer number (335937456).

Almost surely, 2^671874911 is an apocalyptic number.

671874911 is a deficient number, since it is larger than the sum of its proper divisors (1).

671874911 is an equidigital number, since it uses as much as digits as its factorization.

671874911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 44.

The square root of 671874911 is about 25920.5499748751. The cubic root of 671874911 is about 875.8494764235.

The spelling of 671874911 in words is "six hundred seventy-one million, eight hundred seventy-four thousand, nine hundred eleven".