722270401 has 2 divisors, whose sum is σ = 722270402. Its totient is φ = 722270400.

The previous prime is 722270383. The next prime is 722270407. The reversal of 722270401 is 104072227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401000625 + 321269776 = 20025^2 + 17924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722270401 is a prime.

It is not a weakly prime, because it can be changed into another prime (722270407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361135200 + 361135201.

It is an arithmetic number, because the mean of its divisors is an integer number (361135201).

Almost surely, 2^722270401 is an apocalyptic number.

It is an amenable number.

722270401 is a deficient number, since it is larger than the sum of its proper divisors (1).

722270401 is an equidigital number, since it uses as much as digits as its factorization.

722270401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 722270401 is about 26875.0888556671. The cubic root of 722270401 is about 897.2220520790. Note that the first 3 decimals are identical.

The spelling of 722270401 in words is "seven hundred twenty-two million, two hundred seventy thousand, four hundred one".