65424161 has 4 divisors (see below), whose sum is σ = 71371824. Its totient is φ = 59476500.

The previous prime is 65424091. The next prime is 65424173. The reversal of 65424161 is 16142456.

65424161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-65424161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65424061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973815 + ... + 2973836.

It is an arithmetic number, because the mean of its divisors is an integer number (17842956).

Almost surely, 2^65424161 is an apocalyptic number.

It is an amenable number.

65424161 is a deficient number, since it is larger than the sum of its proper divisors (5947663).

65424161 is a wasteful number, since it uses less digits than its factorization.

65424161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947662.

The product of its digits is 5760, while the sum is 29.

The square root of 65424161 is about 8088.5203220367. The cubic root of 65424161 is about 402.9452624295.

The spelling of 65424161 in words is "sixty-five million, four hundred twenty-four thousand, one hundred sixty-one".