65623216 has 20 divisors (see below), whose sum is σ = 128458792. Its totient is φ = 32472576.

The previous prime is 65623193. The next prime is 65623219. The reversal of 65623216 is 61232656.

65623216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65623219) by changing a digit.

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, 19590 + ... + 22693.

Almost surely, 2^65623216 is an apocalyptic number.

It is an amenable number.

65623216 is a deficient number, since it is larger than the sum of its proper divisors (62835576).

65623216 is a wasteful number, since it uses less digits than its factorization.

65623216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42388 (or 42382 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 65623216 is about 8100.8157613909. The cubic root of 65623216 is about 403.3535064169.

The spelling of 65623216 in words is "sixty-five million, six hundred twenty-three thousand, two hundred sixteen".