65240023 has 2 divisors, whose sum is σ = 65240024. Its totient is φ = 65240022.

The previous prime is 65240011. The next prime is 65240047. The reversal of 65240023 is 32004256.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65240023 - 2¹⁷ = 65108951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65239976 and 65240003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65240083) 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, 32620011 + 32620012.

It is an arithmetic number, because the mean of its divisors is an integer number (32620012).

Almost surely, 2^65240023 is an apocalyptic number.

65240023 is a deficient number, since it is larger than the sum of its proper divisors (1).

65240023 is an equidigital number, since it uses as much as digits as its factorization.

65240023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 65240023 is about 8077.1296262967. The cubic root of 65240023 is about 402.5668739110.

Adding to 65240023 its reverse (32004256), we get a palindrome (97244279).

The spelling of 65240023 in words is "sixty-five million, two hundred forty thousand, twenty-three".