65238423 has 4 divisors (see below), whose sum is σ = 86984568. Its totient is φ = 43492280.

The previous prime is 65238409. The next prime is 65238431. The reversal of 65238423 is 32483256.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65238423 - 2⁵ = 65238391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65238443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10873068 + ... + 10873073.

It is an arithmetic number, because the mean of its divisors is an integer number (21746142).

Almost surely, 2^65238423 is an apocalyptic number.

65238423 is a deficient number, since it is larger than the sum of its proper divisors (21746145).

65238423 is a wasteful number, since it uses less digits than its factorization.

65238423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21746144.

The product of its digits is 34560, while the sum is 33.

The square root of 65238423 is about 8077.0305806032. The cubic root of 65238423 is about 402.5635829237.

The spelling of 65238423 in words is "sixty-five million, two hundred thirty-eight thousand, four hundred twenty-three".