64083816 has 24 divisors (see below), whose sum is σ = 173560530. Its totient is φ = 21361248.

The previous prime is 64083809. The next prime is 64083821. The reversal of 64083816 is 61838046.

It is a happy number.

64083816 is a `hidden beast` number, since 640 + 8 + 3 + 8 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59444100 + 4639716 = 7710^2 + 2154^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 444955 + ... + 445098.

Almost surely, 2^64083816 is an apocalyptic number.

It is an amenable number.

64083816 is an abundant number, since it is smaller than the sum of its proper divisors (109476714).

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

64083816 is a wasteful number, since it uses less digits than its factorization.

64083816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890065 (or 890058 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 64083816 is about 8005.2367860045. The cubic root of 64083816 is about 400.1745404946.

The spelling of 64083816 in words is "sixty-four million, eighty-three thousand, eight hundred sixteen".