65299888 has 40 divisors (see below), whose sum is σ = 131527296. Its totient is φ = 31372800.

The previous prime is 65299879. The next prime is 65299901. The reversal of 65299888 is 88899256.

65299888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85428 + ... + 86188.

Almost surely, 2^65299888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65299888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65763648).

65299888 is an abundant number, since it is smaller than the sum of its proper divisors (66227408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65299888 is a wasteful number, since it uses less digits than its factorization.

65299888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 967 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 55.

The square root of 65299888 is about 8080.8346103605. The cubic root of 65299888 is about 402.6899696078.

The spelling of 65299888 in words is "sixty-five million, two hundred ninety-nine thousand, eight hundred eighty-eight".