200640606 has 8 divisors (see below), whose sum is σ = 401281224. Its totient is φ = 66880200.

The previous prime is 200640599. The next prime is 200640607. The reversal of 200640606 is 606046002.

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

200640606 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200640607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16720045 + ... + 16720056.

It is an arithmetic number, because the mean of its divisors is an integer number (50160153).

Almost surely, 2^200640606 is an apocalyptic number.

200640606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200640606 is a wasteful number, since it uses less digits than its factorization.

200640606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33440106.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 200640606 is about 14164.7663588215. The cubic root of 200640606 is about 585.4272632916.

Adding to 200640606 its reverse (606046002), we get a palindrome (806686608).

The spelling of 200640606 in words is "two hundred million, six hundred forty thousand, six hundred six".