673745534 has 32 divisors (see below), whose sum is σ = 1265607936. Its totient is φ = 261328320.

The previous prime is 673745533. The next prime is 673745539. The reversal of 673745534 is 435547376.

673745534 = T₄ + T₅ + ... + T₁₅₉₂.

It is a Smith number, since the sum of its digits (44) 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 (673745533) 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, 25322 + ... + 44594.

It is an arithmetic number, because the mean of its divisors is an integer number (39550248).

Almost surely, 2^673745534 is an apocalyptic number.

673745534 is a deficient number, since it is larger than the sum of its proper divisors (591862402).

673745534 is a wasteful number, since it uses less digits than its factorization.

673745534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19520.

The product of its digits is 1058400, while the sum is 44.

The square root of 673745534 is about 25956.6086767898. The cubic root of 673745534 is about 876.6615650902.

The spelling of 673745534 in words is "six hundred seventy-three million, seven hundred forty-five thousand, five hundred thirty-four".