681433584 has 40 divisors (see below), whose sum is σ = 1895784912. Its totient is φ = 209671680.

The previous prime is 681433583. The next prime is 681433603. The reversal of 681433584 is 485334186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681433583) 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, 545397 + ... + 546644.

Almost surely, 2^681433584 is an apocalyptic number.

It is an amenable number.

681433584 is an abundant number, since it is smaller than the sum of its proper divisors (1214351328).

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

681433584 is a wasteful number, since it uses less digits than its factorization.

681433584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092065 (or 1092059 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 681433584 is about 26104.2828669933. The cubic root of 681433584 is about 879.9834638766.

The spelling of 681433584 in words is "six hundred eighty-one million, four hundred thirty-three thousand, five hundred eighty-four".