65915 has 4 divisors (see below), whose sum is σ = 79104. Its totient is φ = 52728.

The previous prime is 65899. The next prime is 65921. The reversal of 65915 is 51956.

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

It is a cyclic number.

It is not a de Polignac number, because 65915 - 2⁴ = 65899 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 65915.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6587 + ... + 6596.

It is an arithmetic number, because the mean of its divisors is an integer number (19776).

2⁶⁵⁹¹⁵ is an apocalyptic number.

65915 is a deficient number, since it is larger than the sum of its proper divisors (13189).

65915 is a wasteful number, since it uses less digits than its factorization.

65915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13188.

The product of its digits is 1350, while the sum is 26.

The square root of 65915 is about 256.7391672496. The cubic root of 65915 is about 40.3950439955.

The spelling of 65915 in words is "sixty-five thousand, nine hundred fifteen".