673284820 has 24 divisors (see below), whose sum is σ = 1522660104. Its totient is φ = 248597376.

The previous prime is 673284803. The next prime is 673284827. The reversal of 673284820 is 28482376.

It can be written as a sum of positive squares in 4 ways, for example, as 156450064 + 516834756 = 12508^2 + 22734^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673284827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294519 + ... + 1295038.

It is an arithmetic number, because the mean of its divisors is an integer number (63444171).

Almost surely, 2^673284820 is an apocalyptic number.

It is an amenable number.

673284820 is an abundant number, since it is smaller than the sum of its proper divisors (849375284).

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

673284820 is a wasteful number, since it uses less digits than its factorization.

673284820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589579 (or 2589577 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 673284820 is about 25947.7324635506. The cubic root of 673284820 is about 876.4616961821.

The spelling of 673284820 in words is "six hundred seventy-three million, two hundred eighty-four thousand, eight hundred twenty".