65990201 has 4 divisors (see below), whose sum is σ = 66825600. Its totient is φ = 65154804.

The previous prime is 65990161. The next prime is 65990213. The reversal of 65990201 is 10209956.

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 a cyclic number.

It is not a de Polignac number, because 65990201 - 2⁶ = 65990137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65990231) 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, 417581 + ... + 417738.

It is an arithmetic number, because the mean of its divisors is an integer number (16706400).

Almost surely, 2^65990201 is an apocalyptic number.

It is an amenable number.

65990201 is a deficient number, since it is larger than the sum of its proper divisors (835399).

65990201 is an equidigital number, since it uses as much as digits as its factorization.

65990201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835398.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 65990201 is about 8123.4352954892. The cubic root of 65990201 is about 404.1040010163.

The spelling of 65990201 in words is "sixty-five million, nine hundred ninety thousand, two hundred one".