722160401 has 2 divisors, whose sum is σ = 722160402. Its totient is φ = 722160400.

The previous prime is 722160389. The next prime is 722160421. The reversal of 722160401 is 104061227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546624400 + 175536001 = 23380^2 + 13249^2 .

It is a cyclic number.

It is not a de Polignac number, because 722160401 - 2⁶ = 722160337 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (722160421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361080200 + 361080201.

It is an arithmetic number, because the mean of its divisors is an integer number (361080201).

Almost surely, 2^722160401 is an apocalyptic number.

It is an amenable number.

722160401 is a deficient number, since it is larger than the sum of its proper divisors (1).

722160401 is an equidigital number, since it uses as much as digits as its factorization.

722160401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 722160401 is about 26873.0422728801. The cubic root of 722160401 is about 897.1765015315.

The spelling of 722160401 in words is "seven hundred twenty-two million, one hundred sixty thousand, four hundred one".