206662023 has 14 divisors (see below), whose sum is σ = 309852384. Its totient is φ = 137774196.

The previous prime is 206662021. The next prime is 206662067. The reversal of 206662023 is 320266602.

It is a happy number.

It is not a de Polignac number, because 206662023 - 2¹ = 206662021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206662021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 141015 + ... + 142472.

Almost surely, 2^206662023 is an apocalyptic number.

206662023 is a deficient number, since it is larger than the sum of its proper divisors (103190361).

206662023 is an frugal number, since it uses more digits than its factorization.

206662023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283505 (or 283490 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 206662023 is about 14375.7442589940. The cubic root of 206662023 is about 591.2260466437.

The spelling of 206662023 in words is "two hundred six million, six hundred sixty-two thousand, twenty-three".