671612317 has 4 divisors (see below), whose sum is σ = 674166240. Its totient is φ = 669058396.

The previous prime is 671612311. The next prime is 671612321. The reversal of 671612317 is 713216176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 671612317 - 2³ = 671612309 is a prime.

It is a super-2 number, since 2×671612317² = 902126208692216978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671612311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276567 + ... + 1277092.

It is an arithmetic number, because the mean of its divisors is an integer number (168541560).

Almost surely, 2^671612317 is an apocalyptic number.

It is an amenable number.

671612317 is a deficient number, since it is larger than the sum of its proper divisors (2553923).

671612317 is a wasteful number, since it uses less digits than its factorization.

671612317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553922.

The product of its digits is 10584, while the sum is 34.

The square root of 671612317 is about 25915.4841166435. The cubic root of 671612317 is about 875.7353565760.

The spelling of 671612317 in words is "six hundred seventy-one million, six hundred twelve thousand, three hundred seventeen".