213784695 has 12 divisors (see below), whose sum is σ = 370560216. Its totient is φ = 114018480.

The previous prime is 213784667. The next prime is 213784699. The reversal of 213784695 is 596487312.

It is not a de Polignac number, because 213784695 - 2⁵ = 213784663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4750771 = 213784695 / (2 + 1 + 3 + 7 + 8 + 4 + 6 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 213784695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213784699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2375341 + ... + 2375430.

It is an arithmetic number, because the mean of its divisors is an integer number (30880018).

Almost surely, 2^213784695 is an apocalyptic number.

213784695 is a deficient number, since it is larger than the sum of its proper divisors (156775521).

213784695 is a wasteful number, since it uses less digits than its factorization.

213784695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750782 (or 4750779 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 213784695 is about 14621.3780130328. The cubic root of 213784695 is about 597.9417390100.

The spelling of 213784695 in words is "two hundred thirteen million, seven hundred eighty-four thousand, six hundred ninety-five".