65724234 has 16 divisors (see below), whose sum is σ = 131592288. Its totient is φ = 21884112.

The previous prime is 65724233. The next prime is 65724311. The reversal of 65724234 is 43242756.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65724195 and 65724204.

It is not an unprimeable number, because it can be changed into a prime (65724233) 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 7 ways as a sum of consecutive naturals, for example, 489 + ... + 11475.

It is an arithmetic number, because the mean of its divisors is an integer number (8224518).

Almost surely, 2^65724234 is an apocalyptic number.

65724234 is an abundant number, since it is smaller than the sum of its proper divisors (65868054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65724234 is a wasteful number, since it uses less digits than its factorization.

65724234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11989.

The product of its digits is 40320, while the sum is 33.

The square root of 65724234 is about 8107.0484148055. The cubic root of 65724234 is about 403.5603695630.

The spelling of 65724234 in words is "sixty-five million, seven hundred twenty-four thousand, two hundred thirty-four".