206655457 has 16 divisors (see below), whose sum is σ = 223816320. Its totient is φ = 190166400.

The previous prime is 206655443. The next prime is 206655461. The reversal of 206655457 is 754556602.

206655457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206655457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206655467) 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, 241843 + ... + 242695.

It is an arithmetic number, because the mean of its divisors is an integer number (13988520).

Almost surely, 2^206655457 is an apocalyptic number.

It is an amenable number.

206655457 is a deficient number, since it is larger than the sum of its proper divisors (17160863).

206655457 is a wasteful number, since it uses less digits than its factorization.

206655457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 206655457 is about 14375.5158863952. The cubic root of 206655457 is about 591.2197851622.

The spelling of 206655457 in words is "two hundred six million, six hundred fifty-five thousand, four hundred fifty-seven".