213537606 has 8 divisors (see below), whose sum is σ = 427075224. Its totient is φ = 71179200.

The previous prime is 213537563. The next prime is 213537617. The reversal of 213537606 is 606735312.

213537606 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.

213537606 is an admirable number.

It is a super-2 number, since 2×213537606² = 91196618352422472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17794795 + ... + 17794806.

It is an arithmetic number, because the mean of its divisors is an integer number (53384403).

Almost surely, 2^213537606 is an apocalyptic number.

213537606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213537606 is a wasteful number, since it uses less digits than its factorization.

213537606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35589606.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 213537606 is about 14612.9259903689. The cubic root of 213537606 is about 597.7112863056.

The spelling of 213537606 in words is "two hundred thirteen million, five hundred thirty-seven thousand, six hundred six".