24081661 has 2 divisors, whose sum is σ = 24081662. Its totient is φ = 24081660.

The previous prime is 24081647. The next prime is 24081691. The reversal of 24081661 is 16618042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17222500 + 6859161 = 4150^2 + 2619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24081661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24081691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12040830 + 12040831.

It is an arithmetic number, because the mean of its divisors is an integer number (12040831).

Almost surely, 2^24081661 is an apocalyptic number.

It is an amenable number.

24081661 is a deficient number, since it is larger than the sum of its proper divisors (1).

24081661 is an equidigital number, since it uses as much as digits as its factorization.

24081661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 24081661 is about 4907.3068989009. The cubic root of 24081661 is about 288.7766979930.

It can be divided in two parts, 24081 and 661, that added together give a palindrome (24742).

The spelling of 24081661 in words is "twenty-four million, eighty-one thousand, six hundred sixty-one".