65884665 has 96 divisors (see below), whose sum is σ = 138879360. Its totient is φ = 26342400.

The previous prime is 65884661. The next prime is 65884667. The reversal of 65884665 is 56648856.

It is a happy number.

It is not a de Polignac number, because 65884665 - 2² = 65884661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65884661) 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 95 ways as a sum of consecutive naturals, for example, 234325 + ... + 234605.

It is an arithmetic number, because the mean of its divisors is an integer number (1446660).

Almost surely, 2^65884665 is an apocalyptic number.

It is an amenable number.

65884665 is an abundant number, since it is smaller than the sum of its proper divisors (72994695).

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

65884665 is a wasteful number, since it uses less digits than its factorization.

65884665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 336 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 65884665 is about 8116.9369222632. The cubic root of 65884665 is about 403.8884625759. Note that the first 3 decimals are identical.

The spelling of 65884665 in words is "sixty-five million, eight hundred eighty-four thousand, six hundred sixty-five".