206055623 has 4 divisors (see below), whose sum is σ = 218176560. Its totient is φ = 193934688.

The previous prime is 206055599. The next prime is 206055677. The reversal of 206055623 is 326550602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206055623 - 2¹⁸ = 205793479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206055683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060443 + ... + 6060476.

It is an arithmetic number, because the mean of its divisors is an integer number (54544140).

Almost surely, 2^206055623 is an apocalyptic number.

206055623 is a deficient number, since it is larger than the sum of its proper divisors (12120937).

206055623 is a wasteful number, since it uses less digits than its factorization.

206055623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12120936.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 206055623 is about 14354.6376826446. The cubic root of 206055623 is about 590.6472099111.

The spelling of 206055623 in words is "two hundred six million, fifty-five thousand, six hundred twenty-three".