213796643 has 8 divisors (see below), whose sum is σ = 218218176. Its totient is φ = 209404800.

The previous prime is 213796637. The next prime is 213796651. The reversal of 213796643 is 346697312.

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 213796643 - 2¹⁸ = 213534499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213796643.

It is not an unprimeable number, because it can be changed into a prime (213796343) 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, 7430 + ... + 21972.

It is an arithmetic number, because the mean of its divisors is an integer number (27277272).

Almost surely, 2^213796643 is an apocalyptic number.

213796643 is a deficient number, since it is larger than the sum of its proper divisors (4421533).

213796643 is a wasteful number, since it uses less digits than its factorization.

213796643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14845.

The product of its digits is 163296, while the sum is 41.

The square root of 213796643 is about 14621.7865871445. The cubic root of 213796643 is about 597.9528780593.

The spelling of 213796643 in words is "two hundred thirteen million, seven hundred ninety-six thousand, six hundred forty-three".