673513780 has 12 divisors (see below), whose sum is σ = 1414378980. Its totient is φ = 269405504.

The previous prime is 673513751. The next prime is 673513801. The reversal of 673513780 is 87315376.

It can be written as a sum of positive squares in 2 ways, for example, as 487791396 + 185722384 = 22086^2 + 13628^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16837825 + ... + 16837864.

It is an arithmetic number, because the mean of its divisors is an integer number (117864915).

Almost surely, 2^673513780 is an apocalyptic number.

It is an amenable number.

673513780 is an abundant number, since it is smaller than the sum of its proper divisors (740865200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673513780 is a wasteful number, since it uses less digits than its factorization.

673513780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33675698 (or 33675696 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 673513780 is about 25952.1440347421. The cubic root of 673513780 is about 876.5610359765.

The spelling of 673513780 in words is "six hundred seventy-three million, five hundred thirteen thousand, seven hundred eighty".