24640997 has 2 divisors, whose sum is σ = 24640998. Its totient is φ = 24640996.

The previous prime is 24640951. The next prime is 24641003. The reversal of 24640997 is 79904642.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22287841 + 2353156 = 4721^2 + 1534^2 .

It is a cyclic number.

It is not a de Polignac number, because 24640997 - 2¹⁶ = 24575461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24640907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12320498 + 12320499.

It is an arithmetic number, because the mean of its divisors is an integer number (12320499).

Almost surely, 2^24640997 is an apocalyptic number.

It is an amenable number.

24640997 is a deficient number, since it is larger than the sum of its proper divisors (1).

24640997 is an equidigital number, since it uses as much as digits as its factorization.

24640997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 24640997 is about 4963.9698830674. The cubic root of 24640997 is about 290.9953786617.

The spelling of 24640997 in words is "twenty-four million, six hundred forty thousand, nine hundred ninety-seven".