65851273 has 4 divisors (see below), whose sum is σ = 66245760. Its totient is φ = 65456788.

The previous prime is 65851267. The next prime is 65851307. The reversal of 65851273 is 37215856.

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 65851273 - 2⁵ = 65851241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65851213) 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, 196993 + ... + 197326.

It is an arithmetic number, because the mean of its divisors is an integer number (16561440).

Almost surely, 2^65851273 is an apocalyptic number.

It is an amenable number.

65851273 is a deficient number, since it is larger than the sum of its proper divisors (394487).

65851273 is a wasteful number, since it uses less digits than its factorization.

65851273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394486.

The product of its digits is 50400, while the sum is 37.

The square root of 65851273 is about 8114.8797280058. The cubic root of 65851273 is about 403.8202174457.

The spelling of 65851273 in words is "sixty-five million, eight hundred fifty-one thousand, two hundred seventy-three".