65000043 has 16 divisors (see below), whose sum is σ = 96429600. Its totient is φ = 43273440.

The previous prime is 65000029. The next prime is 65000051. The reversal of 65000043 is 34000056.

It is a happy number.

It is not a de Polignac number, because 65000043 - 2⁵ = 65000011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65000063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27513 + ... + 29781.

It is an arithmetic number, because the mean of its divisors is an integer number (6026850).

Almost surely, 2^65000043 is an apocalyptic number.

65000043 is a deficient number, since it is larger than the sum of its proper divisors (31429557).

65000043 is a wasteful number, since it uses less digits than its factorization.

65000043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339 (or 3333 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 65000043 is about 8062.2604150449. The cubic root of 65000043 is about 402.0726645210.

Adding to 65000043 its reverse (34000056), we get a palindrome (99000099).

The spelling of 65000043 in words is "sixty-five million, forty-three", and thus it is an aban number and an uban number.