673217587 has 4 divisors (see below), whose sum is σ = 769391536. Its totient is φ = 577043640.

The previous prime is 673217569. The next prime is 673217593. The reversal of 673217587 is 785712376.

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 673217587 - 2²⁷ = 538999859 is a prime.

It is a super-2 number, since 2×673217587² = 906443838892205138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673247587) 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, 48086964 + ... + 48086977.

It is an arithmetic number, because the mean of its divisors is an integer number (192347884).

Almost surely, 2^673217587 is an apocalyptic number.

673217587 is a deficient number, since it is larger than the sum of its proper divisors (96173949).

673217587 is an equidigital number, since it uses as much as digits as its factorization.

673217587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96173948.

The product of its digits is 493920, while the sum is 46.

The square root of 673217587 is about 25946.4368844741. The cubic root of 673217587 is about 876.4325212529.

The spelling of 673217587 in words is "six hundred seventy-three million, two hundred seventeen thousand, five hundred eighty-seven".