723724769 has 2 divisors, whose sum is σ = 723724770. Its totient is φ = 723724768.

The previous prime is 723724657. The next prime is 723724777. The reversal of 723724769 is 967427327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691006369 + 32718400 = 26287^2 + 5720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723724769 is a prime.

It is a super-2 number, since 2×723724769² = 1047555082528206722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (723724789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361862384 + 361862385.

It is an arithmetic number, because the mean of its divisors is an integer number (361862385).

Almost surely, 2^723724769 is an apocalyptic number.

It is an amenable number.

723724769 is a deficient number, since it is larger than the sum of its proper divisors (1).

723724769 is an equidigital number, since it uses as much as digits as its factorization.

723724769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 47.

The square root of 723724769 is about 26902.1331682081. The cubic root of 723724769 is about 897.8238655515.

The spelling of 723724769 in words is "seven hundred twenty-three million, seven hundred twenty-four thousand, seven hundred sixty-nine".