65103109 has 4 divisors (see below), whose sum is σ = 65130604. Its totient is φ = 65075616.

The previous prime is 65103089. The next prime is 65103119. The reversal of 65103109 is 90130156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28922884 + 36180225 = 5378^2 + 6015^2 .

It is a cyclic number.

It is not a de Polignac number, because 65103109 - 2²³ = 56714501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65103119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9822 + ... + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (16282651).

Almost surely, 2^65103109 is an apocalyptic number.

It is an amenable number.

65103109 is a deficient number, since it is larger than the sum of its proper divisors (27495).

65103109 is a wasteful number, since it uses less digits than its factorization.

65103109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27494.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 65103109 is about 8068.6497631264. The cubic root of 65103109 is about 402.2850650865.

The spelling of 65103109 in words is "sixty-five million, one hundred three thousand, one hundred nine".