206670133 has 4 divisors (see below), whose sum is σ = 206830048. Its totient is φ = 206510220.

The previous prime is 206670131. The next prime is 206670151. The reversal of 206670133 is 331076602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206670133 - 2¹ = 206670131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206670131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78003 + ... + 80608.

It is an arithmetic number, because the mean of its divisors is an integer number (51707512).

Almost surely, 2^206670133 is an apocalyptic number.

It is an amenable number.

206670133 is a deficient number, since it is larger than the sum of its proper divisors (159915).

206670133 is a wasteful number, since it uses less digits than its factorization.

206670133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159914.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 206670133 is about 14376.0263285791. The cubic root of 206670133 is about 591.2337803345.

The spelling of 206670133 in words is "two hundred six million, six hundred seventy thousand, one hundred thirty-three".