65500615 has 4 divisors (see below), whose sum is σ = 78600744. Its totient is φ = 52400488.

The previous prime is 65500601. The next prime is 65500639. The reversal of 65500615 is 51600556.

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 65500615 - 2⁵ = 65500583 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 6550057 + ... + 6550066.

It is an arithmetic number, because the mean of its divisors is an integer number (19650186).

Almost surely, 2^65500615 is an apocalyptic number.

65500615 is a deficient number, since it is larger than the sum of its proper divisors (13100129).

65500615 is a wasteful number, since it uses less digits than its factorization.

65500615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100128.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 65500615 is about 8093.2450228570. The cubic root of 65500615 is about 403.1021605553.

The spelling of 65500615 in words is "sixty-five million, five hundred thousand, six hundred fifteen".