200061649 has 2 divisors, whose sum is σ = 200061650. Its totient is φ = 200061648.

The previous prime is 200061647. The next prime is 200061679. The reversal of 200061649 is 946160002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113571649 + 86490000 = 10657^2 + 9300^2 .

It is a cyclic number.

It is not a de Polignac number, because 200061649 - 2¹ = 200061647 is a prime.

Together with 200061647, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200061647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100030824 + 100030825.

It is an arithmetic number, because the mean of its divisors is an integer number (100030825).

Almost surely, 2^200061649 is an apocalyptic number.

It is an amenable number.

200061649 is a deficient number, since it is larger than the sum of its proper divisors (1).

200061649 is an equidigital number, since it uses as much as digits as its factorization.

200061649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 200061649 is about 14144.3150770902. The cubic root of 200061649 is about 584.8636290596.

The spelling of 200061649 in words is "two hundred million, sixty-one thousand, six hundred forty-nine".