206455356 has 18 divisors (see below), whose sum is σ = 521873352. Its totient is φ = 68818440.

The previous prime is 206455339. The next prime is 206455373. The reversal of 206455356 is 653554602.

It is a happy number.

206455356 is a `hidden beast` number, since 2 + 0 + 645 + 5 + 3 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (206455339) and next prime (206455373).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5734871 = 206455356 / (2 + 0 + 6 + 4 + 5 + 5 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 206455356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2867400 + ... + 2867471.

It is an arithmetic number, because the mean of its divisors is an integer number (28992964).

Almost surely, 2^206455356 is an apocalyptic number.

It is an amenable number.

206455356 is an abundant number, since it is smaller than the sum of its proper divisors (315417996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206455356 is a wasteful number, since it uses less digits than its factorization.

206455356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5734881 (or 5734876 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 206455356 is about 14368.5544158068. The cubic root of 206455356 is about 591.0289008173.

The spelling of 206455356 in words is "two hundred six million, four hundred fifty-five thousand, three hundred fifty-six".