206424623 has 4 divisors (see below), whose sum is σ = 206471328. Its totient is φ = 206377920.

The previous prime is 206424601. The next prime is 206424637. The reversal of 206424623 is 326424602.

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 206424623 - 2⁸ = 206424367 is a prime.

It is a super-2 number, since 2×206424623² = 85222249961384258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206424643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15938 + ... + 25823.

It is an arithmetic number, because the mean of its divisors is an integer number (51617832).

Almost surely, 2^206424623 is an apocalyptic number.

206424623 is a deficient number, since it is larger than the sum of its proper divisors (46705).

206424623 is an equidigital number, since it uses as much as digits as its factorization.

206424623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46704.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 206424623 is about 14367.4849225604. The cubic root of 206424623 is about 590.9995724547. Note that the first 3 decimals are identical.

The spelling of 206424623 in words is "two hundred six million, four hundred twenty-four thousand, six hundred twenty-three".