673480656 has 100 divisors (see below), whose sum is σ = 1956146500. Its totient is φ = 223699968.

The previous prime is 673480607. The next prime is 673480657. The reversal of 673480656 is 656084376.

It can be written as a sum of positive squares in 2 ways, for example, as 316270656 + 357210000 = 17784^2 + 18900^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673480657) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 451560 + ... + 453048.

It is an arithmetic number, because the mean of its divisors is an integer number (19561465).

Almost surely, 2^673480656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673480656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978073250).

673480656 is an abundant number, since it is smaller than the sum of its proper divisors (1282665844).

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

673480656 is a wasteful number, since it uses less digits than its factorization.

673480656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858 (or 1843 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 673480656 is about 25951.5058522622. The cubic root of 673480656 is about 876.5466657267.

The spelling of 673480656 in words is "six hundred seventy-three million, four hundred eighty thousand, six hundred fifty-six".