722228345 has 8 divisors (see below), whose sum is σ = 890097864. Its totient is φ = 562166784.

The previous prime is 722228327. The next prime is 722228369. The reversal of 722228345 is 543822227.

It can be written as a sum of positive squares in 4 ways, for example, as 148913209 + 573315136 = 12203^2 + 23944^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 722228345 - 2¹⁰ = 722227321 is a prime.

It is a super-2 number, since 2×722228345² = 1043227564642878050, which contains 22 as substring.

It is a Duffinian 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, 1951784 + ... + 1952153.

It is an arithmetic number, because the mean of its divisors is an integer number (111262233).

Almost surely, 2^722228345 is an apocalyptic number.

It is an amenable number.

722228345 is a deficient number, since it is larger than the sum of its proper divisors (167869519).

722228345 is a wasteful number, since it uses less digits than its factorization.

722228345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903979.

The product of its digits is 53760, while the sum is 35.

The square root of 722228345 is about 26874.3064096546. The cubic root of 722228345 is about 897.2046374085.

The spelling of 722228345 in words is "seven hundred twenty-two million, two hundred twenty-eight thousand, three hundred forty-five".