722215073 has 2 divisors, whose sum is σ = 722215074. Its totient is φ = 722215072.

The previous prime is 722215027. The next prime is 722215127. The reversal of 722215073 is 370512227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556629649 + 165585424 = 23593^2 + 12868^2 .

It is an emirp because it is prime and its reverse (370512227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722215073 - 2¹⁰ = 722214049 is a prime.

It is a super-2 number, since 2×722215073² = 1043189223336790658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (722215003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361107536 + 361107537.

It is an arithmetic number, because the mean of its divisors is an integer number (361107537).

Almost surely, 2^722215073 is an apocalyptic number.

It is an amenable number.

722215073 is a deficient number, since it is larger than the sum of its proper divisors (1).

722215073 is an equidigital number, since it uses as much as digits as its factorization.

722215073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 722215073 is about 26874.0594812172. The cubic root of 722215073 is about 897.1991415599.

The spelling of 722215073 in words is "seven hundred twenty-two million, two hundred fifteen thousand, seventy-three".