722621365 has 8 divisors (see below), whose sum is σ = 868592088. Its totient is φ = 577132800.

The previous prime is 722621353. The next prime is 722621371. The reversal of 722621365 is 563126227.

722621365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 248819076 + 473802289 = 15774^2 + 21767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-722621365 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722621365.

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, 117232 + ... + 123241.

It is an arithmetic number, because the mean of its divisors is an integer number (108574011).

Almost surely, 2^722621365 is an apocalyptic number.

It is an amenable number.

722621365 is a deficient number, since it is larger than the sum of its proper divisors (145970723).

722621365 is a wasteful number, since it uses less digits than its factorization.

722621365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241079.

The product of its digits is 30240, while the sum is 34.

The square root of 722621365 is about 26881.6176038571. The cubic root of 722621365 is about 897.3673539168.

The spelling of 722621365 in words is "seven hundred twenty-two million, six hundred twenty-one thousand, three hundred sixty-five".