206949655 has 16 divisors (see below), whose sum is σ = 280260000. Its totient is φ = 145317760.

The previous prime is 206949647. The next prime is 206949679. The reversal of 206949655 is 556949602.

It is not a de Polignac number, because 206949655 - 2³ = 206949647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63280 + ... + 66469.

It is an arithmetic number, because the mean of its divisors is an integer number (17516250).

Almost surely, 2^206949655 is an apocalyptic number.

206949655 is a deficient number, since it is larger than the sum of its proper divisors (73310345).

206949655 is a wasteful number, since it uses less digits than its factorization.

206949655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129794.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 206949655 is about 14385.7448538475. The cubic root of 206949655 is about 591.5002087666.

The spelling of 206949655 in words is "two hundred six million, nine hundred forty-nine thousand, six hundred fifty-five".