206664422 has 4 divisors (see below), whose sum is σ = 309996636. Its totient is φ = 103332210.

The previous prime is 206664413. The next prime is 206664431. The reversal of 206664422 is 224466602.

206664422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (206664413) and next prime (206664431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51666104 + ... + 51666107.

It is an arithmetic number, because the mean of its divisors is an integer number (77499159).

Almost surely, 2^206664422 is an apocalyptic number.

206664422 is a deficient number, since it is larger than the sum of its proper divisors (103332214).

206664422 is a wasteful number, since it uses less digits than its factorization.

206664422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103332213.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 206664422 is about 14375.8276979101. The cubic root of 206664422 is about 591.2283343497.

The spelling of 206664422 in words is "two hundred six million, six hundred sixty-four thousand, four hundred twenty-two".