712636216 has 8 divisors (see below), whose sum is σ = 1336192920. Its totient is φ = 356318104.

The previous prime is 712636213. The next prime is 712636217. The reversal of 712636216 is 612636217.

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 (712636213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44539756 + ... + 44539771.

It is an arithmetic number, because the mean of its divisors is an integer number (167024115).

Almost surely, 2^712636216 is an apocalyptic number.

It is an amenable number.

712636216 is a deficient number, since it is larger than the sum of its proper divisors (623556704).

712636216 is a wasteful number, since it uses less digits than its factorization.

712636216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89079533 (or 89079529 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 712636216 is about 26695.2470675961. The cubic root of 712636216 is about 893.2149083134.

Subtracting from 712636216 its reverse (612636217), we obtain a palindrome (99999999).

The spelling of 712636216 in words is "seven hundred twelve million, six hundred thirty-six thousand, two hundred sixteen".