212689616 has 40 divisors (see below), whose sum is σ = 424701984. Its totient is φ = 103109760.

The previous prime is 212689613. The next prime is 212689637. The reversal of 212689616 is 616986212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212689613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261851 + ... + 262661.

Almost surely, 2^212689616 is an apocalyptic number.

It is an amenable number.

212689616 is a deficient number, since it is larger than the sum of its proper divisors (212012368).

212689616 is a wasteful number, since it uses less digits than its factorization.

212689616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1293 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 212689616 is about 14583.8820620574. The cubic root of 212689616 is about 596.9190361451.

The spelling of 212689616 in words is "two hundred twelve million, six hundred eighty-nine thousand, six hundred sixteen".