65000039 has 16 divisors (see below), whose sum is σ = 71632512. Its totient is φ = 58618848.

The previous prime is 65000029. The next prime is 65000051. The reversal of 65000039 is 93000056.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65000039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64999978 and 65000023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65000029) 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, 115172 + ... + 115734.

It is an arithmetic number, because the mean of its divisors is an integer number (4477032).

Almost surely, 2^65000039 is an apocalyptic number.

65000039 is a deficient number, since it is larger than the sum of its proper divisors (6632473).

65000039 is a wasteful number, since it uses less digits than its factorization.

65000039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 65000039 is about 8062.2601669755. The cubic root of 65000039 is about 402.0726562734.

The spelling of 65000039 in words is "sixty-five million, thirty-nine", and thus it is an aban number and an uban number.