206555146 has 16 divisors (see below), whose sum is σ = 354493440. Its totient is φ = 88423920.

The previous prime is 206555143. The next prime is 206555149. The reversal of 206555146 is 641555602.

It is an interprime number because it is at equal distance from previous prime (206555143) and next prime (206555149).

It is not an unprimeable number, because it can be changed into a prime (206555143) 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, 5335 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (22155840).

Almost surely, 2^206555146 is an apocalyptic number.

206555146 is a deficient number, since it is larger than the sum of its proper divisors (147938294).

206555146 is a wasteful number, since it uses less digits than its factorization.

206555146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16629.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 206555146 is about 14372.0265098559. The cubic root of 206555146 is about 591.1241098982.

The spelling of 206555146 in words is "two hundred six million, five hundred fifty-five thousand, one hundred forty-six".