722167605 has 12 divisors (see below), whose sum is σ = 1251757260. Its totient is φ = 385156032.

The previous prime is 722167601. The next prime is 722167609. The reversal of 722167605 is 506761227.

It is an interprime number because it is at equal distance from previous prime (722167601) and next prime (722167609).

It can be written as a sum of positive squares in 2 ways, for example, as 251190801 + 470976804 = 15849^2 + 21702^2 .

It is not a de Polignac number, because 722167605 - 2² = 722167601 is a prime.

It is a super-2 number, since 2×722167605² = 1043052099422872050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 722167605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722167601) 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, 8024040 + ... + 8024129.

It is an arithmetic number, because the mean of its divisors is an integer number (104313105).

Almost surely, 2^722167605 is an apocalyptic number.

It is an amenable number.

722167605 is a deficient number, since it is larger than the sum of its proper divisors (529589655).

722167605 is a wasteful number, since it uses less digits than its factorization.

722167605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16048180 (or 16048177 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 722167605 is about 26873.1763102168. The cubic root of 722167605 is about 897.1794848198.

The spelling of 722167605 in words is "seven hundred twenty-two million, one hundred sixty-seven thousand, six hundred five".