65817201 has 4 divisors (see below), whose sum is σ = 87756272. Its totient is φ = 43878132.

The previous prime is 65817187. The next prime is 65817209. The reversal of 65817201 is 10271856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65817201 - 2⁶ = 65817137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65817209) 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, 10969531 + ... + 10969536.

It is an arithmetic number, because the mean of its divisors is an integer number (21939068).

Almost surely, 2^65817201 is an apocalyptic number.

It is an amenable number.

65817201 is a deficient number, since it is larger than the sum of its proper divisors (21939071).

65817201 is a wasteful number, since it uses less digits than its factorization.

65817201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21939070.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 65817201 is about 8112.7801030226. The cubic root of 65817201 is about 403.7505587764.

The spelling of 65817201 in words is "sixty-five million, eight hundred seventeen thousand, two hundred one".