722491699 has 2 divisors, whose sum is σ = 722491700. Its totient is φ = 722491698.

The previous prime is 722491657. The next prime is 722491717. The reversal of 722491699 is 996194227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722491699 - 2²¹ = 720394547 is a prime.

It is not a weakly prime, because it can be changed into another prime (722491199) 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, 361245849 + 361245850.

It is an arithmetic number, because the mean of its divisors is an integer number (361245850).

Almost surely, 2^722491699 is an apocalyptic number.

722491699 is a deficient number, since it is larger than the sum of its proper divisors (1).

722491699 is an equidigital number, since it uses as much as digits as its factorization.

722491699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 722491699 is about 26879.2056988297. The cubic root of 722491699 is about 897.3136766609.

The spelling of 722491699 in words is "seven hundred twenty-two million, four hundred ninety-one thousand, six hundred ninety-nine".