200619981 has 12 divisors (see below), whose sum is σ = 290065152. Its totient is φ = 133617096.

The previous prime is 200619977. The next prime is 200620019. The reversal of 200619981 is 189916002.

It is not a de Polignac number, because 200619981 - 2² = 200619977 is a prime.

It is a super-2 number, since 2×200619981² = 80496753552880722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200619581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471 + ... + 20036.

It is an arithmetic number, because the mean of its divisors is an integer number (24172096).

Almost surely, 2^200619981 is an apocalyptic number.

It is an amenable number.

200619981 is a deficient number, since it is larger than the sum of its proper divisors (89445171).

200619981 is a wasteful number, since it uses less digits than its factorization.

200619981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21600 (or 21597 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 200619981 is about 14164.0383012755. The cubic root of 200619981 is about 585.4072027942.

The spelling of 200619981 in words is "two hundred million, six hundred nineteen thousand, nine hundred eighty-one".