24720769 has 2 divisors, whose sum is σ = 24720770. Its totient is φ = 24720768.

The previous prime is 24720763. The next prime is 24720781. The reversal of 24720769 is 96702742.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 3560769 = 4600^2 + 1887^2 .

It is a cyclic number.

It is not a de Polignac number, because 24720769 - 2⁹ = 24720257 is a prime.

It is a super-2 number, since 2×24720769² = 1222232839902722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24720763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12360384 + 12360385.

It is an arithmetic number, because the mean of its divisors is an integer number (12360385).

Almost surely, 2^24720769 is an apocalyptic number.

It is an amenable number.

24720769 is a deficient number, since it is larger than the sum of its proper divisors (1).

24720769 is an equidigital number, since it uses as much as digits as its factorization.

24720769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 24720769 is about 4971.9984915525. The cubic root of 24720769 is about 291.3090602106.

The spelling of 24720769 in words is "twenty-four million, seven hundred twenty thousand, seven hundred sixty-nine".