206704995 has 32 divisors (see below), whose sum is σ = 378527232. Its totient is φ = 94355712.

The previous prime is 206704991. The next prime is 206705003. The reversal of 206704995 is 599407602.

It is not a de Polignac number, because 206704995 - 2² = 206704991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206704991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117039 + ... + 118791.

It is an arithmetic number, because the mean of its divisors is an integer number (11828976).

Almost surely, 2^206704995 is an apocalyptic number.

206704995 is a deficient number, since it is larger than the sum of its proper divisors (171822237).

206704995 is a wasteful number, since it uses less digits than its factorization.

206704995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 206704995 is about 14377.2387821862. The cubic root of 206704995 is about 591.2670224111.

The spelling of 206704995 in words is "two hundred six million, seven hundred four thousand, nine hundred ninety-five".