65799969 has 8 divisors (see below), whose sum is σ = 88844160. Its totient is φ = 43311216.

The previous prime is 65799931. The next prime is 65799991. The reversal of 65799969 is 96999756.

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

It is not a de Polignac number, because 65799969 - 2⁷ = 65799841 is a prime.

It is a super-2 number, since 2×65799969² = 8659271840801922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65799919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138582 + ... + 139055.

It is an arithmetic number, because the mean of its divisors is an integer number (11105520).

Almost surely, 2^65799969 is an apocalyptic number.

It is an amenable number.

65799969 is a deficient number, since it is larger than the sum of its proper divisors (23044191).

65799969 is a wasteful number, since it uses less digits than its factorization.

65799969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277719.

The product of its digits is 8266860, while the sum is 60.

The square root of 65799969 is about 8111.7180054536. The cubic root of 65799969 is about 403.7153195745.

It can be divided in two parts, 6 and 5799969, that added together give a palindrome (5799975).

The spelling of 65799969 in words is "sixty-five million, seven hundred ninety-nine thousand, nine hundred sixty-nine".