721364326 has 16 divisors (see below), whose sum is σ = 1114329600. Its totient is φ = 350076168.

The previous prime is 721364243. The next prime is 721364363. The reversal of 721364326 is 623463127.

It is a junction number, because it is equal to n+sod(n) for n = 721364291 and 721364300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29370 + ... + 48013.

It is an arithmetic number, because the mean of its divisors is an integer number (69645600).

Almost surely, 2^721364326 is an apocalyptic number.

721364326 is a deficient number, since it is larger than the sum of its proper divisors (392965274).

721364326 is a wasteful number, since it uses less digits than its factorization.

721364326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77523.

The product of its digits is 36288, while the sum is 34.

The square root of 721364326 is about 26858.2264120325. The cubic root of 721364326 is about 896.8467122013.

The spelling of 721364326 in words is "seven hundred twenty-one million, three hundred sixty-four thousand, three hundred twenty-six".