723072247 has 2 divisors, whose sum is σ = 723072248. Its totient is φ = 723072246.

The previous prime is 723072143. The next prime is 723072263. The reversal of 723072247 is 742270327.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723072247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723072347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361536123 + 361536124.

It is an arithmetic number, because the mean of its divisors is an integer number (361536124).

Almost surely, 2^723072247 is an apocalyptic number.

723072247 is a deficient number, since it is larger than the sum of its proper divisors (1).

723072247 is an equidigital number, since it uses as much as digits as its factorization.

723072247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 723072247 is about 26890.0027333580. The cubic root of 723072247 is about 897.5539535590.

The spelling of 723072247 in words is "seven hundred twenty-three million, seventy-two thousand, two hundred forty-seven".