65797967 has 4 divisors (see below), whose sum is σ = 66537360. Its totient is φ = 65058576.

The previous prime is 65797961. The next prime is 65797981. The reversal of 65797967 is 76979756.

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-65797967 is a prime.

It is a super-2 number, since 2×65797967² = 8658744922666178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65797961) 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, 369563 + ... + 369740.

It is an arithmetic number, because the mean of its divisors is an integer number (16634340).

Almost surely, 2^65797967 is an apocalyptic number.

65797967 is a deficient number, since it is larger than the sum of its proper divisors (739393).

65797967 is an equidigital number, since it uses as much as digits as its factorization.

65797967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739392.

The product of its digits is 5000940, while the sum is 56.

The square root of 65797967 is about 8111.5946027893. The cubic root of 65797967 is about 403.7112251133.

The spelling of 65797967 in words is "sixty-five million, seven hundred ninety-seven thousand, nine hundred sixty-seven".