206664051 has 8 divisors (see below), whose sum is σ = 300602304. Its totient is φ = 125250920.

The previous prime is 206664049. The next prime is 206664061. The reversal of 206664051 is 150466602.

206664051 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.

It is a cyclic number.

It is not a de Polignac number, because 206664051 - 2¹ = 206664049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206664001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131241 + ... + 3131306.

It is an arithmetic number, because the mean of its divisors is an integer number (37575288).

Almost surely, 2^206664051 is an apocalyptic number.

206664051 is a deficient number, since it is larger than the sum of its proper divisors (93938253).

206664051 is a wasteful number, since it uses less digits than its factorization.

206664051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262561.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 206664051 is about 14375.8147942995. The cubic root of 206664051 is about 591.2279805622.

The spelling of 206664051 in words is "two hundred six million, six hundred sixty-four thousand, fifty-one".