213786745 has 8 divisors (see below), whose sum is σ = 257016384. Its totient is φ = 170714544.

The previous prime is 213786737. The next prime is 213786763. The reversal of 213786745 is 547687312.

213786745 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 cyclic number.

It is not a de Polignac number, because 213786745 - 2³ = 213786737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36349 + ... + 41818.

It is an arithmetic number, because the mean of its divisors is an integer number (32127048).

Almost surely, 2^213786745 is an apocalyptic number.

It is an amenable number.

213786745 is a deficient number, since it is larger than the sum of its proper divisors (43229639).

213786745 is an equidigital number, since it uses as much as digits as its factorization.

213786745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78719.

The product of its digits is 282240, while the sum is 43.

The square root of 213786745 is about 14621.4481156963. The cubic root of 213786745 is about 597.9436502423.

The spelling of 213786745 in words is "two hundred thirteen million, seven hundred eighty-six thousand, seven hundred forty-five".