212665416 has 16 divisors (see below), whose sum is σ = 531663600. Its totient is φ = 70888464.

The previous prime is 212665379. The next prime is 212665417. The reversal of 212665416 is 614566212.

It is not an unprimeable number, because it can be changed into a prime (212665417) 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, 4430506 + ... + 4430553.

It is an arithmetic number, because the mean of its divisors is an integer number (33228975).

Almost surely, 2^212665416 is an apocalyptic number.

It is an amenable number.

212665416 is an abundant number, since it is smaller than the sum of its proper divisors (318998184).

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

212665416 is a wasteful number, since it uses less digits than its factorization.

212665416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861068 (or 8861064 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 212665416 is about 14583.0523553884. The cubic root of 212665416 is about 596.8963959729.

The spelling of 212665416 in words is "two hundred twelve million, six hundred sixty-five thousand, four hundred sixteen".