200146985 has 4 divisors (see below), whose sum is σ = 240176388. Its totient is φ = 160117584.

The previous prime is 200146981. The next prime is 200146997. The reversal of 200146985 is 589641002.

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 76247824 + 123899161 = 8732^2 + 11131^2 .

It is a cyclic number.

It is not a de Polignac number, because 200146985 - 2² = 200146981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200146981) 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, 20014694 + ... + 20014703.

It is an arithmetic number, because the mean of its divisors is an integer number (60044097).

Almost surely, 2^200146985 is an apocalyptic number.

It is an amenable number.

200146985 is a deficient number, since it is larger than the sum of its proper divisors (40029403).

200146985 is an equidigital number, since it uses as much as digits as its factorization.

200146985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40029402.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 200146985 is about 14147.3313737963. The cubic root of 200146985 is about 584.9467748103.

Adding to 200146985 its reverse (589641002), we get a palindrome (789787987).

The spelling of 200146985 in words is "two hundred million, one hundred forty-six thousand, nine hundred eighty-five".