672318587 has 4 divisors (see below), whose sum is σ = 672406176. Its totient is φ = 672231000.

The previous prime is 672318551. The next prime is 672318613. The reversal of 672318587 is 785813276.

It is a happy number.

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 672318587 - 2⁶ = 672318523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672318547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31043 + ... + 48044.

It is an arithmetic number, because the mean of its divisors is an integer number (168101544).

Almost surely, 2^672318587 is an apocalyptic number.

672318587 is a deficient number, since it is larger than the sum of its proper divisors (87589).

672318587 is an equidigital number, since it uses as much as digits as its factorization.

672318587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87588.

The product of its digits is 564480, while the sum is 47.

The square root of 672318587 is about 25929.1069456701. The cubic root of 672318587 is about 876.0422245481.

The spelling of 672318587 in words is "six hundred seventy-two million, three hundred eighteen thousand, five hundred eighty-seven".