65989842 has 8 divisors (see below), whose sum is σ = 131979696. Its totient is φ = 21996612.

The previous prime is 65989837. The next prime is 65989843. The reversal of 65989842 is 24898956.

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

65989842 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (65989843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5499148 + ... + 5499159.

It is an arithmetic number, because the mean of its divisors is an integer number (16497462).

Almost surely, 2^65989842 is an apocalyptic number.

65989842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65989842 is a wasteful number, since it uses less digits than its factorization.

65989842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10998312.

The product of its digits is 1244160, while the sum is 51.

The square root of 65989842 is about 8123.4131988961. The cubic root of 65989842 is about 404.1032682125.

The spelling of 65989842 in words is "sixty-five million, nine hundred eighty-nine thousand, eight hundred forty-two".