671919711 has 4 divisors (see below), whose sum is σ = 895892952. Its totient is φ = 447946472.

The previous prime is 671919701. The next prime is 671919749. The reversal of 671919711 is 117919176.

671919711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671919711 - 2²⁶ = 604810847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671919701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111986616 + ... + 111986621.

It is an arithmetic number, because the mean of its divisors is an integer number (223973238).

Almost surely, 2^671919711 is an apocalyptic number.

671919711 is a deficient number, since it is larger than the sum of its proper divisors (223973241).

671919711 is a wasteful number, since it uses less digits than its factorization.

671919711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223973240.

The product of its digits is 23814, while the sum is 42.

The square root of 671919711 is about 25921.4141396645. The cubic root of 671919711 is about 875.8689429362.

The spelling of 671919711 in words is "six hundred seventy-one million, nine hundred nineteen thousand, seven hundred eleven".