721713696 has 72 divisors (see below), whose sum is σ = 2082416112. Its totient is φ = 218697600.

The previous prime is 721713679. The next prime is 721713703. The reversal of 721713696 is 696317127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19450 + ... + 42681.

It is an arithmetic number, because the mean of its divisors is an integer number (28922446).

Almost surely, 2^721713696 is an apocalyptic number.

It is an amenable number.

721713696 is an abundant number, since it is smaller than the sum of its proper divisors (1360702416).

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

721713696 is a wasteful number, since it uses less digits than its factorization.

721713696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62166 (or 62147 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 721713696 is about 26864.7295910456. The cubic root of 721713696 is about 896.9914752816.

It can be divided in two parts, 721 and 713696, that added together give a palindrome (714417).

The spelling of 721713696 in words is "seven hundred twenty-one million, seven hundred thirteen thousand, six hundred ninety-six".