673399287 has 24 divisors (see below), whose sum is σ = 1076070528. Its totient is φ = 402368400.

The previous prime is 673399283. The next prime is 673399289. The reversal of 673399287 is 782993376.

It is not a de Polignac number, because 673399287 - 2² = 673399283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673399283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40873 + ... + 54930.

It is an arithmetic number, because the mean of its divisors is an integer number (44836272).

Almost surely, 2^673399287 is an apocalyptic number.

673399287 is a deficient number, since it is larger than the sum of its proper divisors (402671241).

673399287 is a wasteful number, since it uses less digits than its factorization.

673399287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95891 (or 95888 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 673399287 is about 25949.9380924117. The cubic root of 673399287 is about 876.5113632536.

The spelling of 673399287 in words is "six hundred seventy-three million, three hundred ninety-nine thousand, two hundred eighty-seven".