681602732 has 24 divisors (see below), whose sum is σ = 1257123840. Its totient is φ = 322468560.

The previous prime is 681602729. The next prime is 681602759. The reversal of 681602732 is 237206186.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 681602692 and 681602701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62357 + ... + 72467.

It is an arithmetic number, because the mean of its divisors is an integer number (52380160).

Almost surely, 2^681602732 is an apocalyptic number.

It is an amenable number.

681602732 is a deficient number, since it is larger than the sum of its proper divisors (575521108).

681602732 is a wasteful number, since it uses less digits than its factorization.

681602732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021 (or 11019 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 681602732 is about 26107.5225174661. The cubic root of 681602732 is about 880.0562687849.

The spelling of 681602732 in words is "six hundred eighty-one million, six hundred two thousand, seven hundred thirty-two".