65416243 has 4 divisors (see below), whose sum is σ = 65572048. Its totient is φ = 65260440.

The previous prime is 65416213. The next prime is 65416283. The reversal of 65416243 is 34261456.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65416243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65416213) 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, 77271 + ... + 78112.

It is an arithmetic number, because the mean of its divisors is an integer number (16393012).

Almost surely, 2^65416243 is an apocalyptic number.

65416243 is a deficient number, since it is larger than the sum of its proper divisors (155805).

65416243 is a wasteful number, since it uses less digits than its factorization.

65416243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155804.

The product of its digits is 17280, while the sum is 31.

The square root of 65416243 is about 8088.0308481113. The cubic root of 65416243 is about 402.9290062063.

Adding to 65416243 its reverse (34261456), we get a palindrome (99677699).

The spelling of 65416243 in words is "sixty-five million, four hundred sixteen thousand, two hundred forty-three".