65416247 has 4 divisors (see below), whose sum is σ = 70448280. Its totient is φ = 60384216.

The previous prime is 65416213. The next prime is 65416283. The reversal of 65416247 is 74261456.

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 65416247 - 2²⁰ = 64367671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65416207) 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, 2515997 + ... + 2516022.

It is an arithmetic number, because the mean of its divisors is an integer number (17612070).

Almost surely, 2^65416247 is an apocalyptic number.

65416247 is a deficient number, since it is larger than the sum of its proper divisors (5032033).

65416247 is a wasteful number, since it uses less digits than its factorization.

65416247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032032.

The product of its digits is 40320, while the sum is 35.

The square root of 65416247 is about 8088.0310953903. The cubic root of 65416247 is about 402.9290144189.

The spelling of 65416247 in words is "sixty-five million, four hundred sixteen thousand, two hundred forty-seven".