720681846 has 16 divisors (see below), whose sum is σ = 1476519408. Its totient is φ = 234368000.

The previous prime is 720681827. The next prime is 720681847. The reversal of 720681846 is 648186027.

It is a junction number, because it is equal to n+sod(n) for n = 720681798 and 720681807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720681847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464555 + ... + 1465046.

It is an arithmetic number, because the mean of its divisors is an integer number (92282463).

Almost surely, 2^720681846 is an apocalyptic number.

720681846 is an abundant number, since it is smaller than the sum of its proper divisors (755837562).

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

720681846 is a wasteful number, since it uses less digits than its factorization.

720681846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929647.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 720681846 is about 26845.5181734307. The cubic root of 720681846 is about 896.5637885558.

The spelling of 720681846 in words is "seven hundred twenty million, six hundred eighty-one thousand, eight hundred forty-six".