65289966 has 32 divisors (see below), whose sum is σ = 157090560. Its totient is φ = 17672256.

The previous prime is 65289923. The next prime is 65289971. The reversal of 65289966 is 66998256.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 40111 + ... + 41706.

It is an arithmetic number, because the mean of its divisors is an integer number (4909080).

Almost surely, 2^65289966 is an apocalyptic number.

65289966 is an abundant number, since it is smaller than the sum of its proper divisors (91800594).

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

65289966 is a wasteful number, since it uses less digits than its factorization.

65289966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81848.

The product of its digits is 1399680, while the sum is 51.

The square root of 65289966 is about 8080.2206653036. The cubic root of 65289966 is about 402.6695729814.

The spelling of 65289966 in words is "sixty-five million, two hundred eighty-nine thousand, nine hundred sixty-six".