212839663 has 8 divisors (see below), whose sum is σ = 214502400. Its totient is φ = 211181880.

The previous prime is 212839661. The next prime is 212839751. The reversal of 212839663 is 366938212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212839663 - 2¹ = 212839661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212839661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151438 + ... + 152836.

It is an arithmetic number, because the mean of its divisors is an integer number (26812800).

Almost surely, 2^212839663 is an apocalyptic number.

212839663 is a deficient number, since it is larger than the sum of its proper divisors (1662737).

212839663 is a wasteful number, since it uses less digits than its factorization.

212839663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477.

The product of its digits is 93312, while the sum is 40.

The square root of 212839663 is about 14589.0254300964. The cubic root of 212839663 is about 597.0593734410.

The spelling of 212839663 in words is "two hundred twelve million, eight hundred thirty-nine thousand, six hundred sixty-three".