213937684 has 12 divisors (see below), whose sum is σ = 374691744. Its totient is φ = 106882904.

The previous prime is 213937681. The next prime is 213937687. The reversal of 213937684 is 486739312.

It is an interprime number because it is at equal distance from previous prime (213937681) and next prime (213937687).

It is a self number, because there is not a number n which added to its sum of digits gives 213937684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213937681) 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, 15712 + ... + 25975.

It is an arithmetic number, because the mean of its divisors is an integer number (31224312).

Almost surely, 2^213937684 is an apocalyptic number.

It is an amenable number.

213937684 is a deficient number, since it is larger than the sum of its proper divisors (160754060).

213937684 is a wasteful number, since it uses less digits than its factorization.

213937684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42974 (or 42972 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 213937684 is about 14626.6087662178. The cubic root of 213937684 is about 598.0843383918.

The spelling of 213937684 in words is "two hundred thirteen million, nine hundred thirty-seven thousand, six hundred eighty-four".