65813201 has 4 divisors (see below), whose sum is σ = 65911092. Its totient is φ = 65715312.

The previous prime is 65813183. The next prime is 65813203. The reversal of 65813201 is 10231856.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51825601 + 13987600 = 7199^2 + 3740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65813201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65813203) 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, 47930 + ... + 49283.

It is an arithmetic number, because the mean of its divisors is an integer number (16477773).

Almost surely, 2^65813201 is an apocalyptic number.

It is an amenable number.

65813201 is a deficient number, since it is larger than the sum of its proper divisors (97891).

65813201 is an equidigital number, since it uses as much as digits as its factorization.

65813201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97890.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 65813201 is about 8112.5335746609. The cubic root of 65813201 is about 403.7423793799.

The spelling of 65813201 in words is "sixty-five million, eight hundred thirteen thousand, two hundred one".