636232216 has 8 divisors (see below), whose sum is σ = 1192935420. Its totient is φ = 318116104.

The previous prime is 636232183. The next prime is 636232217. The reversal of 636232216 is 612232636.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636232217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39764506 + ... + 39764521.

Almost surely, 2^636232216 is an apocalyptic number.

It is an amenable number.

636232216 is a deficient number, since it is larger than the sum of its proper divisors (556703204).

636232216 is a wasteful number, since it uses less digits than its factorization.

636232216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79529033 (or 79529029 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 636232216 is about 25223.6439873385. The cubic root of 636232216 is about 860.0794121729.

The spelling of 636232216 in words is "six hundred thirty-six million, two hundred thirty-two thousand, two hundred sixteen".