722899 has 2 divisors, whose sum is σ = 722900. Its totient is φ = 722898.

The previous prime is 722881. The next prime is 722903. The reversal of 722899 is 998227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722899 - 2¹⁷ = 591827 is a prime.

It is a super-3 number, since 3×722899³ = 1133324106713816097, which contains 333 as substring.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁶ + 2¹² + 8⁴ + 2¹⁶ + 9² + 9⁶ .

It is not a weakly prime, because it can be changed into another prime (722819) 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, 361449 + 361450.

It is an arithmetic number, because the mean of its divisors is an integer number (361450).

2⁷²²⁸⁹⁹ is an apocalyptic number.

722899 is a deficient number, since it is larger than the sum of its proper divisors (1).

722899 is an equidigital number, since it uses as much as digits as its factorization.

722899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 722899 is about 850.2346734873. The cubic root of 722899 is about 89.7482263650.

The spelling of 722899 in words is "seven hundred twenty-two thousand, eight hundred ninety-nine".