213886647 has 24 divisors (see below), whose sum is σ = 334667424. Its totient is φ = 130849344.

The previous prime is 213886619. The next prime is 213886657. The reversal of 213886647 is 746688312.

It is not a de Polignac number, because 213886647 - 2¹² = 213882551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213886657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14958 + ... + 25524.

It is an arithmetic number, because the mean of its divisors is an integer number (13944476).

Almost surely, 2^213886647 is an apocalyptic number.

213886647 is a deficient number, since it is larger than the sum of its proper divisors (120780777).

213886647 is a wasteful number, since it uses less digits than its factorization.

213886647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10759 (or 10756 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 213886647 is about 14624.8639993677. The cubic root of 213886647 is about 598.0367749184.

The spelling of 213886647 in words is "two hundred thirteen million, eight hundred eighty-six thousand, six hundred forty-seven".