722047 has 2 divisors, whose sum is σ = 722048. Its totient is φ = 722046.

The previous prime is 722027. The next prime is 722063. The reversal of 722047 is 740227.

It is a strong prime.

It is an emirp because it is prime and its reverse (740227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722047 - 2¹⁵ = 689279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361023 + 361024.

It is an arithmetic number, because the mean of its divisors is an integer number (361024).

2⁷²²⁰⁴⁷ is an apocalyptic number.

722047 is a deficient number, since it is larger than the sum of its proper divisors (1).

722047 is an equidigital number, since it uses as much as digits as its factorization.

722047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 722047 is about 849.7334876301. The cubic root of 722047 is about 89.7129537801.

The spelling of 722047 in words is "seven hundred twenty-two thousand, forty-seven", and thus it is an iban number.