65144917 has 4 divisors (see below), whose sum is σ = 65753856. Its totient is φ = 64535980.

The previous prime is 65144903. The next prime is 65144923. The reversal of 65144917 is 71944156.

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 not a de Polignac number, because 65144917 - 2⁷ = 65144789 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 (65144117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304309 + ... + 304522.

It is an arithmetic number, because the mean of its divisors is an integer number (16438464).

Almost surely, 2^65144917 is an apocalyptic number.

It is an amenable number.

65144917 is a deficient number, since it is larger than the sum of its proper divisors (608939).

65144917 is a wasteful number, since it uses less digits than its factorization.

65144917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608938.

The product of its digits is 30240, while the sum is 37.

The square root of 65144917 is about 8071.2401153726. The cubic root of 65144917 is about 402.3711599767.

The spelling of 65144917 in words is "sixty-five million, one hundred forty-four thousand, nine hundred seventeen".