671423717 has 8 divisors (see below), whose sum is σ = 697334400. Its totient is φ = 645997504.

The previous prime is 671423713. The next prime is 671423741. The reversal of 671423717 is 717324176.

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

It is a cyclic number.

It is not a de Polignac number, because 671423717 - 2² = 671423713 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 (671423713) 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, 118292 + ... + 123837.

It is an arithmetic number, because the mean of its divisors is an integer number (87166800).

Almost surely, 2^671423717 is an apocalyptic number.

It is an amenable number.

671423717 is a deficient number, since it is larger than the sum of its proper divisors (25910683).

671423717 is a wasteful number, since it uses less digits than its factorization.

671423717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242235.

The product of its digits is 49392, while the sum is 38.

The square root of 671423717 is about 25911.8451099106. The cubic root of 671423717 is about 875.6533751775.

The spelling of 671423717 in words is "six hundred seventy-one million, four hundred twenty-three thousand, seven hundred seventeen".