206939168 has 18 divisors (see below), whose sum is σ = 407571759. Its totient is φ = 103428896.

The previous prime is 206939149. The next prime is 206939171. The reversal of 206939168 is 861939602.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 103469584 + 103469584 = 10172^2 + 10172^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10172.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 80105 + ... + 82647.

Almost surely, 2^206939168 is an apocalyptic number.

It is an amenable number.

206939168 is a deficient number, since it is larger than the sum of its proper divisors (200632591).

206939168 is an frugal number, since it uses more digits than its factorization.

206939168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 206939168 is about 14385.3803564591. The cubic root of 206939168 is about 591.4902173390.

The spelling of 206939168 in words is "two hundred six million, nine hundred thirty-nine thousand, one hundred sixty-eight".