65868969 has 4 divisors (see below), whose sum is σ = 87825296. Its totient is φ = 43912644.

The previous prime is 65868923. The next prime is 65868997. The reversal of 65868969 is 96986856.

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 65868969 - 2⁹ = 65868457 is a prime.

It is a super-2 number, since 2×65868969² = 8677442154245922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65868469) 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, 10978159 + ... + 10978164.

It is an arithmetic number, because the mean of its divisors is an integer number (21956324).

Almost surely, 2^65868969 is an apocalyptic number.

It is an amenable number.

65868969 is a deficient number, since it is larger than the sum of its proper divisors (21956327).

65868969 is a wasteful number, since it uses less digits than its factorization.

65868969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956326.

The product of its digits is 5598720, while the sum is 57.

The square root of 65868969 is about 8115.9699974803. The cubic root of 65868969 is about 403.8563866404.

The spelling of 65868969 in words is "sixty-five million, eight hundred sixty-eight thousand, nine hundred sixty-nine".