65299889 has 4 divisors (see below), whose sum is σ = 65541120. Its totient is φ = 65058660.

The previous prime is 65299879. The next prime is 65299901. The reversal of 65299889 is 98899256.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65299889 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65299849) 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, 120209 + ... + 120750.

It is an arithmetic number, because the mean of its divisors is an integer number (16385280).

Almost surely, 2^65299889 is an apocalyptic number.

It is an amenable number.

65299889 is a deficient number, since it is larger than the sum of its proper divisors (241231).

65299889 is a wasteful number, since it uses less digits than its factorization.

65299889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241230.

The product of its digits is 2799360, while the sum is 56.

The square root of 65299889 is about 8080.8346722353. The cubic root of 65299889 is about 402.6899716634.

The spelling of 65299889 in words is "sixty-five million, two hundred ninety-nine thousand, eight hundred eighty-nine".