673297287 has 16 divisors (see below), whose sum is σ = 967252608. Its totient is φ = 414136800.

The previous prime is 673297283. The next prime is 673297307. The reversal of 673297287 is 782792376.

It is not a de Polignac number, because 673297287 - 2² = 673297283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673297283) 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 15 ways as a sum of consecutive naturals, for example, 147948 + ... + 152430.

It is an arithmetic number, because the mean of its divisors is an integer number (60453288).

Almost surely, 2^673297287 is an apocalyptic number.

673297287 is a deficient number, since it is larger than the sum of its proper divisors (293955321).

673297287 is a wasteful number, since it uses less digits than its factorization.

673297287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8350.

The product of its digits is 1778112, while the sum is 51.

The square root of 673297287 is about 25947.9726953764. The cubic root of 673297287 is about 876.4671058691.

The spelling of 673297287 in words is "six hundred seventy-three million, two hundred ninety-seven thousand, two hundred eighty-seven".