673993187 has 6 divisors (see below), whose sum is σ = 784032948. Its totient is φ = 577708404.

The previous prime is 673993171. The next prime is 673993189. The reversal of 673993187 is 781399376.

It is a happy number.

It is not a de Polignac number, because 673993187 - 2⁴ = 673993171 is a prime.

It is a super-2 number, since 2×673993187² = 908533632244833938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673993189) 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 5 ways as a sum of consecutive naturals, for example, 6877433 + ... + 6877530.

It is an arithmetic number, because the mean of its divisors is an integer number (130672158).

Almost surely, 2^673993187 is an apocalyptic number.

673993187 is a deficient number, since it is larger than the sum of its proper divisors (110039761).

673993187 is a wasteful number, since it uses less digits than its factorization.

673993187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13754977 (or 13754970 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The square root of 673993187 is about 25961.3787576854. The cubic root of 673993187 is about 876.7689653176.

The spelling of 673993187 in words is "six hundred seventy-three million, nine hundred ninety-three thousand, one hundred eighty-seven".