65038239 has 36 divisors (see below), whose sum is σ = 110171880. Its totient is φ = 36862560.

The previous prime is 65038223. The next prime is 65038241. The reversal of 65038239 is 93283056.

It is not a de Polignac number, because 65038239 - 2⁴ = 65038223 is a prime.

It is a super-2 number, since 2×65038239² = 8459945064442242, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65038439) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60769 + ... + 61829.

It is an arithmetic number, because the mean of its divisors is an integer number (3060330).

Almost surely, 2^65038239 is an apocalyptic number.

65038239 is a deficient number, since it is larger than the sum of its proper divisors (45133641).

65038239 is a wasteful number, since it uses less digits than its factorization.

65038239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1210 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 65038239 is about 8064.6288817279. The cubic root of 65038239 is about 402.1514058037.

The spelling of 65038239 in words is "sixty-five million, thirty-eight thousand, two hundred thirty-nine".