200893681 has 2 divisors, whose sum is σ = 200893682. Its totient is φ = 200893680.

The previous prime is 200893619. The next prime is 200893687. The reversal of 200893681 is 186398002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179131456 + 21762225 = 13384^2 + 4665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200893681 is a prime.

It is a super-2 number, since 2×200893681² = 80716542131459522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 200893681.

It is not a weakly prime, because it can be changed into another prime (200893687) 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 as a sum of consecutive naturals, namely, 100446840 + 100446841.

It is an arithmetic number, because the mean of its divisors is an integer number (100446841).

Almost surely, 2^200893681 is an apocalyptic number.

It is an amenable number.

200893681 is a deficient number, since it is larger than the sum of its proper divisors (1).

200893681 is an equidigital number, since it uses as much as digits as its factorization.

200893681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 200893681 is about 14173.6968007644. The cubic root of 200893681 is about 585.6732998232.

The spelling of 200893681 in words is "two hundred million, eight hundred ninety-three thousand, six hundred eighty-one".