213479685 has 32 divisors (see below), whose sum is σ = 380400000. Its totient is φ = 113591808.

The previous prime is 213479647. The next prime is 213479689. The reversal of 213479685 is 586974312.

It is not a de Polignac number, because 213479685 - 2⁸ = 213479429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 213479685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213479689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65781 + ... + 68949.

It is an arithmetic number, because the mean of its divisors is an integer number (11887500).

Almost surely, 2^213479685 is an apocalyptic number.

It is an amenable number.

213479685 is a deficient number, since it is larger than the sum of its proper divisors (166920315).

213479685 is a wasteful number, since it uses less digits than its factorization.

213479685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3676 counting only the distinct ones).

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

The square root of 213479685 is about 14610.9440146761. The cubic root of 213479685 is about 597.6572393601.

The spelling of 213479685 in words is "two hundred thirteen million, four hundred seventy-nine thousand, six hundred eighty-five".