65318879 has 4 divisors (see below), whose sum is σ = 69161184. Its totient is φ = 61476576.

The previous prime is 65318857. The next prime is 65318881. The reversal of 65318879 is 97881356.

It is a happy number.

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 65318879 - 2⁸ = 65318623 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 (65318819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921127 + ... + 1921160.

It is an arithmetic number, because the mean of its divisors is an integer number (17290296).

Almost surely, 2^65318879 is an apocalyptic number.

65318879 is a deficient number, since it is larger than the sum of its proper divisors (3842305).

65318879 is a wasteful number, since it uses less digits than its factorization.

65318879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3842304.

The product of its digits is 362880, while the sum is 47.

The square root of 65318879 is about 8082.0095892049. The cubic root of 65318879 is about 402.7290035899.

The spelling of 65318879 in words is "sixty-five million, three hundred eighteen thousand, eight hundred seventy-nine".