65287684 has 96 divisors (see below), whose sum is σ = 155361024. Its totient is φ = 23224320.

The previous prime is 65287661. The next prime is 65287687. The reversal of 65287684 is 48678256.

It is not an unprimeable number, because it can be changed into a prime (65287687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193564 + ... + 193900.

It is an arithmetic number, because the mean of its divisors is an integer number (1618344).

Almost surely, 2^65287684 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 65287684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77680512).

65287684 is an abundant number, since it is smaller than the sum of its proper divisors (90073340).

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

65287684 is a wasteful number, since it uses less digits than its factorization.

65287684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 411 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 65287684 is about 8080.0794550549. The cubic root of 65287684 is about 402.6648815884.

The spelling of 65287684 in words is "sixty-five million, two hundred eighty-seven thousand, six hundred eighty-four".