65497679 has 8 divisors (see below), whose sum is σ = 70641312. Its totient is φ = 60369120.

The previous prime is 65497673. The next prime is 65497687. The reversal of 65497679 is 97679456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65497679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65497679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65497673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6269 + ... + 13049.

It is an arithmetic number, because the mean of its divisors is an integer number (8830164).

Almost surely, 2^65497679 is an apocalyptic number.

65497679 is a deficient number, since it is larger than the sum of its proper divisors (5143633).

65497679 is a wasteful number, since it uses less digits than its factorization.

65497679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537.

The product of its digits is 2857680, while the sum is 53.

The square root of 65497679 is about 8093.0636349902. The cubic root of 65497679 is about 403.0961375807.

The spelling of 65497679 in words is "sixty-five million, four hundred ninety-seven thousand, six hundred seventy-nine".