722797065 has 12 divisors (see below), whose sum is σ = 1252848324. Its totient is φ = 385491744.

The previous prime is 722797043. The next prime is 722797079. The reversal of 722797065 is 560797227.

It can be written as a sum of positive squares in 2 ways, for example, as 354041856 + 368755209 = 18816^2 + 19203^2 .

It is not a de Polignac number, because 722797065 - 2⁶ = 722797001 is a prime.

It is a super-2 number, since 2×722797065² = 1044871194345228450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 16062157 = 722797065 / (7 + 2 + 2 + 7 + 9 + 7 + 0 + 6 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 722797065.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8031034 + ... + 8031123.

It is an arithmetic number, because the mean of its divisors is an integer number (104404027).

Almost surely, 2^722797065 is an apocalyptic number.

It is an amenable number.

722797065 is a deficient number, since it is larger than the sum of its proper divisors (530051259).

722797065 is a wasteful number, since it uses less digits than its factorization.

722797065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16062168 (or 16062165 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 722797065 is about 26884.8854377325. The cubic root of 722797065 is about 897.4400774181.

The spelling of 722797065 in words is "seven hundred twenty-two million, seven hundred ninety-seven thousand, sixty-five".