65868973 has 4 divisors (see below), whose sum is σ = 66852160. Its totient is φ = 64885788.

The previous prime is 65868923. The next prime is 65868997. The reversal of 65868973 is 37986856.

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 65868973 - 2⁹ = 65868461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65868973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65868923) 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, 491493 + ... + 491626.

It is an arithmetic number, because the mean of its divisors is an integer number (16713040).

Almost surely, 2^65868973 is an apocalyptic number.

It is an amenable number.

65868973 is a deficient number, since it is larger than the sum of its proper divisors (983187).

65868973 is an equidigital number, since it uses as much as digits as its factorization.

65868973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983186.

The product of its digits is 2177280, while the sum is 52.

The square root of 65868973 is about 8115.9702439080. The cubic root of 65868973 is about 403.8563948154.

The spelling of 65868973 in words is "sixty-five million, eight hundred sixty-eight thousand, nine hundred seventy-three".