671744711 has 8 divisors (see below), whose sum is σ = 733390464. Its totient is φ = 610195320.

The previous prime is 671744701. The next prime is 671744729. The reversal of 671744711 is 117447176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671744711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671744701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9101 + ... + 37766.

It is an arithmetic number, because the mean of its divisors is an integer number (91673808).

Almost surely, 2^671744711 is an apocalyptic number.

671744711 is a deficient number, since it is larger than the sum of its proper divisors (61645753).

671744711 is a wasteful number, since it uses less digits than its factorization.

671744711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48181.

The product of its digits is 32928, while the sum is 38.

The square root of 671744711 is about 25918.0383324047. The cubic root of 671744711 is about 875.7928969586.

It can be divided in two parts, 6 and 71744711, that added together give a palindrome (71744717).

The spelling of 671744711 in words is "six hundred seventy-one million, seven hundred forty-four thousand, seven hundred eleven".