671223719 has 8 divisors (see below), whose sum is σ = 675378000. Its totient is φ = 667077376.

The previous prime is 671223713. The next prime is 671223727. The reversal of 671223719 is 917322176.

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 671223719 - 2⁴ = 671223703 is a prime.

It is a super-2 number, since 2×671223719² = 901082561896381922, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (31752) is a multiple of the sum of its prime divisors (3969).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671223713) 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, 294167 + ... + 296439.

It is an arithmetic number, because the mean of its divisors is an integer number (84422250).

Almost surely, 2^671223719 is an apocalyptic number.

671223719 is a deficient number, since it is larger than the sum of its proper divisors (4154281).

671223719 is a wasteful number, since it uses less digits than its factorization.

671223719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969.

The product of its digits is 31752, while the sum is 38.

The square root of 671223719 is about 25907.9856221976. The cubic root of 671223719 is about 875.5664224775.

The spelling of 671223719 in words is "six hundred seventy-one million, two hundred twenty-three thousand, seven hundred nineteen".