673794656 has 48 divisors (see below), whose sum is σ = 1362922848. Its totient is φ = 327705600.

The previous prime is 673794647. The next prime is 673794659. The reversal of 673794656 is 656497376.

It is a junction number, because it is equal to n+sod(n) for n = 673794598 and 673794607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673794659) 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, 659426 + ... + 660446.

It is an arithmetic number, because the mean of its divisors is an integer number (28394226).

Almost surely, 2^673794656 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 673794656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681461424).

673794656 is an abundant number, since it is smaller than the sum of its proper divisors (689128192).

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

673794656 is a wasteful number, since it uses less digits than its factorization.

673794656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1567 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 53.

The square root of 673794656 is about 25957.5548925549. The cubic root of 673794656 is about 876.6828700294.

The spelling of 673794656 in words is "six hundred seventy-three million, seven hundred ninety-four thousand, six hundred fifty-six".