65383812 has 36 divisors (see below), whose sum is σ = 177990540. Its totient is φ = 20117952.

The previous prime is 65383811. The next prime is 65383817. The reversal of 65383812 is 21838356.

It can be written as a sum of positive squares in 2 ways, for example, as 36288576 + 29095236 = 6024^2 + 5394^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (65383811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69387 + ... + 70322.

Almost surely, 2^65383812 is an apocalyptic number.

It is an amenable number.

65383812 is an abundant number, since it is smaller than the sum of its proper divisors (112606728).

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

65383812 is a wasteful number, since it uses less digits than its factorization.

65383812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139732 (or 139727 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 65383812 is about 8086.0257234318. The cubic root of 65383812 is about 402.8624093386.

The spelling of 65383812 in words is "sixty-five million, three hundred eighty-three thousand, eight hundred twelve".