206510146 has 8 divisors (see below), whose sum is σ = 323233344. Its totient is φ = 98765700.

The previous prime is 206510137. The next prime is 206510149. The reversal of 206510146 is 641015602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 206510146.

It is not an unprimeable number, because it can be changed into a prime (206510149) 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 3 ways as a sum of consecutive naturals, for example, 2244630 + ... + 2244721.

It is an arithmetic number, because the mean of its divisors is an integer number (40404168).

Almost surely, 2^206510146 is an apocalyptic number.

206510146 is a deficient number, since it is larger than the sum of its proper divisors (116723198).

206510146 is a wasteful number, since it uses less digits than its factorization.

206510146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489376.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 206510146 is about 14370.4608833537. The cubic root of 206510146 is about 591.0811794469.

Adding to 206510146 its reverse (641015602), we get a palindrome (847525748).

The spelling of 206510146 in words is "two hundred six million, five hundred ten thousand, one hundred forty-six".