206508164 has 6 divisors (see below), whose sum is σ = 361389294. Its totient is φ = 103254080.

The previous prime is 206508161. The next prime is 206508173. The reversal of 206508164 is 461805602.

It can be written as a sum of positive squares in only one way, i.e., 184960000 + 21548164 = 13600^2 + 4642^2 .

It is a super-3 number, since 3×206508164³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206508164.

It is not an unprimeable number, because it can be changed into a prime (206508161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25813517 + ... + 25813524.

It is an arithmetic number, because the mean of its divisors is an integer number (60231549).

Almost surely, 2^206508164 is an apocalyptic number.

It is an amenable number.

206508164 is a deficient number, since it is larger than the sum of its proper divisors (154881130).

206508164 is a wasteful number, since it uses less digits than its factorization.

206508164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51627045 (or 51627043 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 206508164 is about 14370.3919222824. The cubic root of 206508164 is about 591.0792884557.

The spelling of 206508164 in words is "two hundred six million, five hundred eight thousand, one hundred sixty-four".