63216009 has 12 divisors (see below), whose sum is σ = 91505856. Its totient is φ = 42054552.

The previous prime is 63216007. The next prime is 63216011. The reversal of 63216009 is 90061236.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63216007) and next prime (63216011).

It is not a de Polignac number, because 63216009 - 2¹ = 63216007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63216007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2829 + ... + 11594.

It is an arithmetic number, because the mean of its divisors is an integer number (7625488).

Almost surely, 2^63216009 is an apocalyptic number.

It is an amenable number.

63216009 is a deficient number, since it is larger than the sum of its proper divisors (28289847).

63216009 is a wasteful number, since it uses less digits than its factorization.

63216009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14916 (or 14913 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 63216009 is about 7950.8495772464. The cubic root of 63216009 is about 398.3599703636.

It can be divided in two parts, 632 and 16009, that added together give a square (16641 = 129²).

The spelling of 63216009 in words is "sixty-three million, two hundred sixteen thousand, nine".