200660641 has 4 divisors (see below), whose sum is σ = 200736900. Its totient is φ = 200584384.

The previous prime is 200660627. The next prime is 200660701. The reversal of 200660641 is 146066002.

It is a happy number.

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 172528225 + 28132416 = 13135^2 + 5304^2 .

It is a cyclic number.

It is not a de Polignac number, because 200660641 - 2²¹ = 198563489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200664641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34036 + ... + 39493.

It is an arithmetic number, because the mean of its divisors is an integer number (50184225).

Almost surely, 2^200660641 is an apocalyptic number.

It is an amenable number.

200660641 is a deficient number, since it is larger than the sum of its proper divisors (76259).

200660641 is an equidigital number, since it uses as much as digits as its factorization.

200660641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76258.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 200660641 is about 14165.4735536797. The cubic root of 200660641 is about 585.4467486209.

The spelling of 200660641 in words is "two hundred million, six hundred sixty thousand, six hundred forty-one".