20241665 has 8 divisors (see below), whose sum is σ = 24323328. Its totient is φ = 16171120.

The previous prime is 20241653. The next prime is 20241671. The reversal of 20241665 is 56614202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20241665 - 2¹⁴ = 20225281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1970 + ... + 6660.

It is an arithmetic number, because the mean of its divisors is an integer number (3040416).

Almost surely, 2^20241665 is an apocalyptic number.

It is an amenable number.

20241665 is a deficient number, since it is larger than the sum of its proper divisors (4081663).

20241665 is an equidigital number, since it uses as much as digits as its factorization.

20241665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20241665 is about 4499.0737935713. The cubic root of 20241665 is about 272.5306870023.

Adding to 20241665 its reverse (56614202), we get a palindrome (76855867).

The spelling of 20241665 in words is "twenty million, two hundred forty-one thousand, six hundred sixty-five".