213685898 has 4 divisors (see below), whose sum is σ = 320528850. Its totient is φ = 106842948.

The previous prime is 213685897. The next prime is 213685909. The reversal of 213685898 is 898586312.

213685898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 168298729 + 45387169 = 12973^2 + 6737^2 .

It is not an unprimeable number, because it can be changed into a prime (213685897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53421473 + ... + 53421476.

Almost surely, 2^213685898 is an apocalyptic number.

213685898 is a deficient number, since it is larger than the sum of its proper divisors (106842952).

213685898 is a wasteful number, since it uses less digits than its factorization.

213685898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106842951.

The product of its digits is 829440, while the sum is 50.

The square root of 213685898 is about 14617.9991106854. Note that the first 3 decimals coincide. The cubic root of 213685898 is about 597.8496152458.

The spelling of 213685898 in words is "two hundred thirteen million, six hundred eighty-five thousand, eight hundred ninety-eight".