722165 has 8 divisors (see below), whose sum is σ = 876120. Its totient is φ = 571392.

The previous prime is 722159. The next prime is 722167. The reversal of 722165 is 561227.

722165 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 14884 + 707281 = 122^2 + 841^2 .

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 722165 - 2⁴ = 722149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 722165.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 722165.

It is not an unprimeable number, because it can be changed into a prime (722167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (109515).

2⁷²²¹⁶⁵ is an apocalyptic number.

It is an amenable number.

722165 is a deficient number, since it is larger than the sum of its proper divisors (153955).

722165 is a wasteful number, since it uses less digits than its factorization.

722165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its digits is 840, while the sum is 23.

The square root of 722165 is about 849.8029183287. The cubic root of 722165 is about 89.7178406051.

The spelling of 722165 in words is "seven hundred twenty-two thousand, one hundred sixty-five".