206443801 has 8 divisors (see below), whose sum is σ = 219723624. Its totient is φ = 193290240.

The previous prime is 206443771. The next prime is 206443813. The reversal of 206443801 is 108344602.

It can be written as a sum of positive squares in 4 ways, for example, as 39388176 + 167055625 = 6276^2 + 12925^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 206443801 - 2⁷ = 206443673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206443801.

It is not an unprimeable number, because it can be changed into a prime (206423801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28180 + ... + 34741.

It is an arithmetic number, because the mean of its divisors is an integer number (27465453).

Almost surely, 2^206443801 is an apocalyptic number.

It is an amenable number.

206443801 is a deficient number, since it is larger than the sum of its proper divisors (13279823).

206443801 is a wasteful number, since it uses less digits than its factorization.

206443801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63131.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 206443801 is about 14368.1523168430. The cubic root of 206443801 is about 591.0178742746.

The spelling of 206443801 in words is "two hundred six million, four hundred forty-three thousand, eight hundred one".