65591423 has 16 divisors (see below), whose sum is σ = 72887040. Its totient is φ = 58709376.

The previous prime is 65591371. The next prime is 65591437. The reversal of 65591423 is 32419556.

It is a cyclic number.

It is not a de Polignac number, because 65591423 - 2⁸ = 65591167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65591453) 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 15 ways as a sum of consecutive naturals, for example, 88388 + ... + 89126.

It is an arithmetic number, because the mean of its divisors is an integer number (4555440).

Almost surely, 2^65591423 is an apocalyptic number.

65591423 is a deficient number, since it is larger than the sum of its proper divisors (7295617).

65591423 is a wasteful number, since it uses less digits than its factorization.

65591423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

The product of its digits is 32400, while the sum is 35.

The square root of 65591423 is about 8098.8531904215. The cubic root of 65591423 is about 403.2883572704.

The spelling of 65591423 in words is "sixty-five million, five hundred ninety-one thousand, four hundred twenty-three".