788723221 has 16 divisors (see below), whose sum is σ = 935625600. Its totient is φ = 655427520.

The previous prime is 788723219. The next prime is 788723239. The reversal of 788723221 is 122327887.

788723221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 788723221 - 2¹ = 788723219 is a prime.

It is a super-2 number, since 2×788723221² = 1244168638689229682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788723261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12046 + ... + 41503.

It is an arithmetic number, because the mean of its divisors is an integer number (58476600).

Almost surely, 2^788723221 is an apocalyptic number.

It is an amenable number.

788723221 is a deficient number, since it is larger than the sum of its proper divisors (146902379).

788723221 is a wasteful number, since it uses less digits than its factorization.

788723221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53676.

The product of its digits is 75264, while the sum is 40.

The square root of 788723221 is about 28084.2165815605. The cubic root of 788723221 is about 923.9352622479.

The spelling of 788723221 in words is "seven hundred eighty-eight million, seven hundred twenty-three thousand, two hundred twenty-one".