65391371 has 4 divisors (see below), whose sum is σ = 65412600. Its totient is φ = 65370144.

The previous prime is 65391349. The next prime is 65391373. The reversal of 65391371 is 17319356.

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

It is a cyclic number.

It is not a de Polignac number, because 65391371 - 2¹⁴ = 65374987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65391373) 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, 5006 + ... + 12483.

It is an arithmetic number, because the mean of its divisors is an integer number (16353150).

Almost surely, 2^65391371 is an apocalyptic number.

65391371 is a deficient number, since it is larger than the sum of its proper divisors (21229).

65391371 is a wasteful number, since it uses less digits than its factorization.

65391371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21228.

The product of its digits is 17010, while the sum is 35.

The square root of 65391371 is about 8086.4931212485. The cubic root of 65391371 is about 402.8779336685.

The spelling of 65391371 in words is "sixty-five million, three hundred ninety-one thousand, three hundred seventy-one".