212643604 has 12 divisors (see below), whose sum is σ = 380044224. Its totient is φ = 104059544.

The previous prime is 212643569. The next prime is 212643619. The reversal of 212643604 is 406346212.

212643604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565354 + ... + 565729.

It is an arithmetic number, because the mean of its divisors is an integer number (31670352).

Almost surely, 2^212643604 is an apocalyptic number.

It is an amenable number.

212643604 is a deficient number, since it is larger than the sum of its proper divisors (167400620).

212643604 is a wasteful number, since it uses less digits than its factorization.

212643604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131134 (or 1131132 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 212643604 is about 14582.3044818026. The cubic root of 212643604 is about 596.8759884088.

Adding to 212643604 its reverse (406346212), we get a palindrome (618989816).

The spelling of 212643604 in words is "two hundred twelve million, six hundred forty-three thousand, six hundred four".