24006781 has 2 divisors, whose sum is σ = 24006782. Its totient is φ = 24006780.

The previous prime is 24006769. The next prime is 24006799. The reversal of 24006781 is 18760042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23609881 + 396900 = 4859^2 + 630^2 .

It is a cyclic number.

It is not a de Polignac number, because 24006781 - 2¹³ = 23998589 is a prime.

It is a super-2 number, since 2×24006781² = 1152651067963922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24006701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12003390 + 12003391.

It is an arithmetic number, because the mean of its divisors is an integer number (12003391).

Almost surely, 2^24006781 is an apocalyptic number.

It is an amenable number.

24006781 is a deficient number, since it is larger than the sum of its proper divisors (1).

24006781 is an equidigital number, since it uses as much as digits as its factorization.

24006781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 24006781 is about 4899.6715196021. The cubic root of 24006781 is about 288.4770778765.

The spelling of 24006781 in words is "twenty-four million, six thousand, seven hundred eighty-one".