206245651 has 16 divisors (see below), whose sum is σ = 218700000. Its totient is φ = 194204416.

The previous prime is 206245643. The next prime is 206245657. The reversal of 206245651 is 156542602.

It is not a de Polignac number, because 206245651 - 2³ = 206245643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206245657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254535 + ... + 255343.

It is an arithmetic number, because the mean of its divisors is an integer number (13668750).

Almost surely, 2^206245651 is an apocalyptic number.

206245651 is a deficient number, since it is larger than the sum of its proper divisors (12454349).

206245651 is a wasteful number, since it uses less digits than its factorization.

206245651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 206245651 is about 14361.2552028017. The cubic root of 206245651 is about 590.8287224253.

The spelling of 206245651 in words is "two hundred six million, two hundred forty-five thousand, six hundred fifty-one".