206423485 has 8 divisors (see below), whose sum is σ = 250491960. Its totient is φ = 163282944.

The previous prime is 206423473. The next prime is 206423509. The reversal of 206423485 is 584324602.

It can be written as a sum of positive squares in 4 ways, for example, as 5861241 + 200562244 = 2421^2 + 14162^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206423485 is a prime.

It is a super-2 number, since 2×206423485² = 85221310319090450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206423485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231492 + ... + 232381.

It is an arithmetic number, because the mean of its divisors is an integer number (31311495).

Almost surely, 2^206423485 is an apocalyptic number.

It is an amenable number.

206423485 is a deficient number, since it is larger than the sum of its proper divisors (44068475).

206423485 is an equidigital number, since it uses as much as digits as its factorization.

206423485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463967.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 206423485 is about 14367.4453191930. The cubic root of 206423485 is about 590.9984864106.

The spelling of 206423485 in words is "two hundred six million, four hundred twenty-three thousand, four hundred eighty-five".