722246345 has 12 divisors (see below), whose sum is σ = 906019716. Its totient is φ = 552673440.

The previous prime is 722246279. The next prime is 722246347. The reversal of 722246345 is 543642227.

It can be written as a sum of positive squares in 2 ways, for example, as 72812089 + 649434256 = 8533^2 + 25484^2 .

It is not a de Polignac number, because 722246345 - 2⁸ = 722246089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722246347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133886 + ... + 139175.

It is an arithmetic number, because the mean of its divisors is an integer number (75501643).

Almost surely, 2^722246345 is an apocalyptic number.

It is an amenable number.

722246345 is a deficient number, since it is larger than the sum of its proper divisors (183773371).

722246345 is a wasteful number, since it uses less digits than its factorization.

722246345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273112 (or 273089 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The square root of 722246345 is about 26874.6412999318. The cubic root of 722246345 is about 897.2120909835.

The spelling of 722246345 in words is "seven hundred twenty-two million, two hundred forty-six thousand, three hundred forty-five".