213683863 has 8 divisors (see below), whose sum is σ = 230523408. Its totient is φ = 197318784.

The previous prime is 213683851. The next prime is 213683893. The reversal of 213683863 is 368386312.

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 213683863 - 2¹⁷ = 213552791 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 (213683893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117681 + ... + 119482.

It is an arithmetic number, because the mean of its divisors is an integer number (28815426).

Almost surely, 2^213683863 is an apocalyptic number.

213683863 is a deficient number, since it is larger than the sum of its proper divisors (16839545).

213683863 is a wasteful number, since it uses less digits than its factorization.

213683863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237233.

The product of its digits is 124416, while the sum is 40.

The square root of 213683863 is about 14617.9295045502. The cubic root of 213683863 is about 597.8477174013.

The spelling of 213683863 in words is "two hundred thirteen million, six hundred eighty-three thousand, eight hundred sixty-three".