206631164 has 6 divisors (see below), whose sum is σ = 361604544. Its totient is φ = 103315580.

The previous prime is 206631121. The next prime is 206631167. The reversal of 206631164 is 461136602.

It is a happy number.

206631164 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206631167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25828892 + ... + 25828899.

It is an arithmetic number, because the mean of its divisors is an integer number (60267424).

Almost surely, 2^206631164 is an apocalyptic number.

It is an amenable number.

206631164 is a deficient number, since it is larger than the sum of its proper divisors (154973380).

206631164 is a wasteful number, since it uses less digits than its factorization.

206631164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51657795 (or 51657793 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 206631164 is about 14374.6709179723. The cubic root of 206631164 is about 591.1966176716.

Adding to 206631164 its reverse (461136602), we get a palindrome (667767766).

The spelling of 206631164 in words is "two hundred six million, six hundred thirty-one thousand, one hundred sixty-four".