213999736 has 16 divisors (see below), whose sum is σ = 422368200. Its totient is φ = 101368224.

The previous prime is 213999733. The next prime is 213999761. The reversal of 213999736 is 637999312.

213999736 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213999736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213999733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703795 + ... + 704098.

Almost surely, 2^213999736 is an apocalyptic number.

It is an amenable number.

213999736 is a deficient number, since it is larger than the sum of its proper divisors (208368464).

213999736 is a wasteful number, since it uses less digits than its factorization.

213999736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407918 (or 1407914 counting only the distinct ones).

The product of its digits is 551124, while the sum is 49.

The square root of 213999736 is about 14628.7298149908. The cubic root of 213999736 is about 598.1421570069.

The spelling of 213999736 in words is "two hundred thirteen million, nine hundred ninety-nine thousand, seven hundred thirty-six".