206949477 has 16 divisors (see below), whose sum is σ = 317763072. Its totient is φ = 117352560.

The previous prime is 206949437. The next prime is 206949487. The reversal of 206949477 is 774949602.

206949477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206949477 - 2⁸ = 206949221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206949437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34863 + ... + 40364.

It is an arithmetic number, because the mean of its divisors is an integer number (19860192).

Almost surely, 2^206949477 is an apocalyptic number.

It is an amenable number.

206949477 is a deficient number, since it is larger than the sum of its proper divisors (110813595).

206949477 is a wasteful number, since it uses less digits than its factorization.

206949477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75368.

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 206949477 is about 14385.7386671662. The cubic root of 206949477 is about 591.5000391810.

The spelling of 206949477 in words is "two hundred six million, nine hundred forty-nine thousand, four hundred seventy-seven".