63216065 has 16 divisors (see below), whose sum is σ = 82999296. Its totient is φ = 45840000.

The previous prime is 63216031. The next prime is 63216067. The reversal of 63216065 is 56061236.

It is not a de Polignac number, because 63216065 - 2¹² = 63211969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63216067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19565 + ... + 22565.

It is an arithmetic number, because the mean of its divisors is an integer number (5187456).

Almost surely, 2^63216065 is an apocalyptic number.

It is an amenable number.

63216065 is a deficient number, since it is larger than the sum of its proper divisors (19783231).

63216065 is a wasteful number, since it uses less digits than its factorization.

63216065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 63216065 is about 7950.8530988819. The cubic root of 63216065 is about 398.3600879928.

The spelling of 63216065 in words is "sixty-three million, two hundred sixteen thousand, sixty-five".