65603984 has 10 divisors (see below), whose sum is σ = 127107750. Its totient is φ = 32801984.

The previous prime is 65603971. The next prime is 65603999. The reversal of 65603984 is 48930656.

It can be written as a sum of positive squares in only one way, i.e., 61277584 + 4326400 = 7828^2 + 2080^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2050109 + ... + 2050140.

It is an arithmetic number, because the mean of its divisors is an integer number (12710775).

Almost surely, 2^65603984 is an apocalyptic number.

It is an amenable number.

65603984 is a deficient number, since it is larger than the sum of its proper divisors (61503766).

65603984 is a wasteful number, since it uses less digits than its factorization.

65603984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100257 (or 4100251 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 65603984 is about 8099.6286334622. The cubic root of 65603984 is about 403.3140993643.

The spelling of 65603984 in words is "sixty-five million, six hundred three thousand, nine hundred eighty-four".