206441651 has 4 divisors (see below), whose sum is σ = 222321792. Its totient is φ = 190561512.

The previous prime is 206441623. The next prime is 206441671. The reversal of 206441651 is 156144602.

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 206441651 - 2¹⁰ = 206440627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206441671) 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 3 ways as a sum of consecutive naturals, for example, 7940051 + ... + 7940076.

It is an arithmetic number, because the mean of its divisors is an integer number (55580448).

Almost surely, 2^206441651 is an apocalyptic number.

206441651 is a deficient number, since it is larger than the sum of its proper divisors (15880141).

206441651 is a wasteful number, since it uses less digits than its factorization.

206441651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15880140.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 206441651 is about 14368.0774983990. The cubic root of 206441651 is about 591.0158225575.

The spelling of 206441651 in words is "two hundred six million, four hundred forty-one thousand, six hundred fifty-one".