213666382 has 8 divisors (see below), whose sum is σ = 321070536. Its totient is φ = 106642872.

The previous prime is 213666377. The next prime is 213666391. The reversal of 213666382 is 283666312.

213666382 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93753 + ... + 96004.

It is an arithmetic number, because the mean of its divisors is an integer number (40133817).

Almost surely, 2^213666382 is an apocalyptic number.

213666382 is a deficient number, since it is larger than the sum of its proper divisors (107404154).

213666382 is a wasteful number, since it uses less digits than its factorization.

213666382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190322.

The product of its digits is 62208, while the sum is 37.

The square root of 213666382 is about 14617.3315622243. The cubic root of 213666382 is about 597.8314140941.

The spelling of 213666382 in words is "two hundred thirteen million, six hundred sixty-six thousand, three hundred eighty-two".