200390761 has 2 divisors, whose sum is σ = 200390762. Its totient is φ = 200390760.

The previous prime is 200390759. The next prime is 200390791. The reversal of 200390761 is 167093002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199685161 + 705600 = 14131^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 200390761 - 2¹ = 200390759 is a prime.

Together with 200390759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200390791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100195380 + 100195381.

It is an arithmetic number, because the mean of its divisors is an integer number (100195381).

Almost surely, 2^200390761 is an apocalyptic number.

It is an amenable number.

200390761 is a deficient number, since it is larger than the sum of its proper divisors (1).

200390761 is an equidigital number, since it uses as much as digits as its factorization.

200390761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 200390761 is about 14155.9443697692. The cubic root of 200390761 is about 585.1841638986.

The spelling of 200390761 in words is "two hundred million, three hundred ninety thousand, seven hundred sixty-one".