65219984 has 20 divisors (see below), whose sum is σ = 127485516. Its totient is φ = 32320512.

The previous prime is 65219969. The next prime is 65220017. The reversal of 65219984 is 48991256.

65219984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27667600 + 37552384 = 5260^2 + 6128^2 .

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 3 ways as a sum of consecutive naturals, for example, 16229 + ... + 19844.

Almost surely, 2^65219984 is an apocalyptic number.

It is an amenable number.

65219984 is a deficient number, since it is larger than the sum of its proper divisors (62265532).

65219984 is a wasteful number, since it uses less digits than its factorization.

65219984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36194 (or 36188 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 65219984 is about 8075.8890532250. The cubic root of 65219984 is about 402.5256524679.

The spelling of 65219984 in words is "sixty-five million, two hundred nineteen thousand, nine hundred eighty-four".