673736518 has 32 divisors (see below), whose sum is σ = 1274172480. Its totient is φ = 260029440.

The previous prime is 673736501. The next prime is 673736519. The reversal of 673736518 is 815637376.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673736519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37683 + ... + 52606.

It is an arithmetic number, because the mean of its divisors is an integer number (39817890).

Almost surely, 2^673736518 is an apocalyptic number.

673736518 is a deficient number, since it is larger than the sum of its proper divisors (600435962).

673736518 is a wasteful number, since it uses less digits than its factorization.

673736518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90352.

The product of its digits is 635040, while the sum is 46.

The square root of 673736518 is about 25956.4350017486. The cubic root of 673736518 is about 876.6576546049.

The spelling of 673736518 in words is "six hundred seventy-three million, seven hundred thirty-six thousand, five hundred eighteen".