206260664 has 16 divisors (see below), whose sum is σ = 387912120. Its totient is φ = 102817440.

The previous prime is 206260633. The next prime is 206260667. The reversal of 206260664 is 466062602.

It is a self number, because there is not a number n which added to its sum of digits gives 206260664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206260667) 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 3 ways as a sum of consecutive naturals, for example, 36299 + ... + 41594.

Almost surely, 2^206260664 is an apocalyptic number.

It is an amenable number.

206260664 is a deficient number, since it is larger than the sum of its proper divisors (181651456).

206260664 is a wasteful number, since it uses less digits than its factorization.

206260664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78230 (or 78226 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 206260664 is about 14361.7778843707. Note that the first 3 decimals coincide. The cubic root of 206260664 is about 590.8430579137.

It can be divided in two parts, 2062 and 60664, that added together give a palindrome (62726).

The spelling of 206260664 in words is "two hundred six million, two hundred sixty thousand, six hundred sixty-four".