65137823 has 2 divisors, whose sum is σ = 65137824. Its totient is φ = 65137822.

The previous prime is 65137811. The next prime is 65137837. The reversal of 65137823 is 32873156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65137823 - 2⁶ = 65137759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65137843) 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 as a sum of consecutive naturals, namely, 32568911 + 32568912.

It is an arithmetic number, because the mean of its divisors is an integer number (32568912).

Almost surely, 2^65137823 is an apocalyptic number.

65137823 is a deficient number, since it is larger than the sum of its proper divisors (1).

65137823 is an equidigital number, since it uses as much as digits as its factorization.

65137823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 65137823 is about 8070.8006418199. The cubic root of 65137823 is about 402.3565539529.

The spelling of 65137823 in words is "sixty-five million, one hundred thirty-seven thousand, eight hundred twenty-three".