206648455 has 16 divisors (see below), whose sum is σ = 268238880. Its totient is φ = 151924608.

The previous prime is 206648443. The next prime is 206648459. The reversal of 206648455 is 554846602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206648455 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206648459) 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, 7944 + ... + 21826.

It is an arithmetic number, because the mean of its divisors is an integer number (16764930).

Almost surely, 2^206648455 is an apocalyptic number.

206648455 is a deficient number, since it is larger than the sum of its proper divisors (61590425).

206648455 is a wasteful number, since it uses less digits than its factorization.

206648455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14130.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 206648455 is about 14375.2723452462. The cubic root of 206648455 is about 591.2131077553.

The spelling of 206648455 in words is "two hundred six million, six hundred forty-eight thousand, four hundred fifty-five".