200239645 has 4 divisors (see below), whose sum is σ = 240287580. Its totient is φ = 160191712.

The previous prime is 200239643. The next prime is 200239703. The reversal of 200239645 is 546932002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 153412996 + 46826649 = 12386^2 + 6843^2 .

It is a cyclic number.

It is not a de Polignac number, because 200239645 - 2¹ = 200239643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200239643) 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, 20023960 + ... + 20023969.

It is an arithmetic number, because the mean of its divisors is an integer number (60071895).

Almost surely, 2^200239645 is an apocalyptic number.

It is an amenable number.

200239645 is a deficient number, since it is larger than the sum of its proper divisors (40047935).

200239645 is an equidigital number, since it uses as much as digits as its factorization.

200239645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40047934.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 200239645 is about 14150.6058174200. The cubic root of 200239645 is about 585.0370298230.

The spelling of 200239645 in words is "two hundred million, two hundred thirty-nine thousand, six hundred forty-five".