65845215 has 24 divisors (see below), whose sum is σ = 114397920. Its totient is φ = 35035584.

The previous prime is 65845193. The next prime is 65845223. The reversal of 65845215 is 51254856.

It is not a de Polignac number, because 65845215 - 2⁵ = 65845183 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65845215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21181 + ... + 24089.

It is an arithmetic number, because the mean of its divisors is an integer number (4766580).

Almost surely, 2^65845215 is an apocalyptic number.

65845215 is a deficient number, since it is larger than the sum of its proper divisors (48552705).

65845215 is a wasteful number, since it uses less digits than its factorization.

65845215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423 (or 3420 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 65845215 is about 8114.5064544925. The cubic root of 65845215 is about 403.8078338941.

The spelling of 65845215 in words is "sixty-five million, eight hundred forty-five thousand, two hundred fifteen".