671434911 has 24 divisors (see below), whose sum is σ = 1110873504. Its totient is φ = 382821120.

The previous prime is 671434909. The next prime is 671434919. The reversal of 671434911 is 119434176.

It is not a de Polignac number, because 671434911 - 2¹ = 671434909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671434919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17131 + ... + 40451.

It is an arithmetic number, because the mean of its divisors is an integer number (46286396).

Almost surely, 2^671434911 is an apocalyptic number.

671434911 is a deficient number, since it is larger than the sum of its proper divisors (439438593).

671434911 is a wasteful number, since it uses less digits than its factorization.

671434911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23791 (or 23788 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 671434911 is about 25912.0611106102. The cubic root of 671434911 is about 875.6582414585.

The spelling of 671434911 in words is "six hundred seventy-one million, four hundred thirty-four thousand, nine hundred eleven".