65043873 has 24 divisors (see below), whose sum is σ = 96071976. Its totient is φ = 42393600.

The previous prime is 65043857. The next prime is 65043877. The reversal of 65043873 is 37834056.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6796449 + 58247424 = 2607^2 + 7632^2 .

It is not a de Polignac number, because 65043873 - 2⁴ = 65043857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65043877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140863 + ... + 141323.

It is an arithmetic number, because the mean of its divisors is an integer number (4002999).

Almost surely, 2^65043873 is an apocalyptic number.

It is an amenable number.

65043873 is a deficient number, since it is larger than the sum of its proper divisors (31028103).

65043873 is a wasteful number, since it uses less digits than its factorization.

65043873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 65043873 is about 8064.9781772798. The cubic root of 65043873 is about 402.1630177192.

The spelling of 65043873 in words is "sixty-five million, forty-three thousand, eight hundred seventy-three".