65616216 has 16 divisors (see below), whose sum is σ = 164040600. Its totient is φ = 21872064.

The previous prime is 65616211. The next prime is 65616247. The reversal of 65616216 is 61261656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65616211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366981 + ... + 1367028.

Almost surely, 2^65616216 is an apocalyptic number.

It is an amenable number.

65616216 is an abundant number, since it is smaller than the sum of its proper divisors (98424384).

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

65616216 is a wasteful number, since it uses less digits than its factorization.

65616216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734018 (or 2734014 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 65616216 is about 8100.3836946160. The cubic root of 65616216 is about 403.3391640590.

The spelling of 65616216 in words is "sixty-five million, six hundred sixteen thousand, two hundred sixteen".