65873091 has 4 divisors (see below), whose sum is σ = 87830792. Its totient is φ = 43915392.

The previous prime is 65873077. The next prime is 65873099. The reversal of 65873091 is 19037856.

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

It is not a de Polignac number, because 65873091 - 2⁹ = 65872579 is a prime.

It is a super-3 number, since 3×65873091³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65873099) 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, 10978846 + ... + 10978851.

It is an arithmetic number, because the mean of its divisors is an integer number (21957698).

Almost surely, 2^65873091 is an apocalyptic number.

65873091 is a deficient number, since it is larger than the sum of its proper divisors (21957701).

65873091 is a wasteful number, since it uses less digits than its factorization.

65873091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21957700.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 65873091 is about 8116.2239372753. The cubic root of 65873091 is about 403.8648107453.

The spelling of 65873091 in words is "sixty-five million, eight hundred seventy-three thousand, ninety-one".