722070409 has 2 divisors, whose sum is σ = 722070410. Its totient is φ = 722070408.

The previous prime is 722070407. The next prime is 722070431. The reversal of 722070409 is 904070227.

It is a happy number.

722070409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 576144009 + 145926400 = 24003^2 + 12080^2 .

It is a cyclic number.

It is not a de Polignac number, because 722070409 - 2¹ = 722070407 is a prime.

Together with 722070407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (722070407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361035204 + 361035205.

It is an arithmetic number, because the mean of its divisors is an integer number (361035205).

Almost surely, 2^722070409 is an apocalyptic number.

It is an amenable number.

722070409 is a deficient number, since it is larger than the sum of its proper divisors (1).

722070409 is an equidigital number, since it uses as much as digits as its factorization.

722070409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 722070409 is about 26871.3678289736. The cubic root of 722070409 is about 897.1392327744.

The spelling of 722070409 in words is "seven hundred twenty-two million, seventy thousand, four hundred nine".