204069881 has 2 divisors, whose sum is σ = 204069882. Its totient is φ = 204069880.

The previous prime is 204069871. The next prime is 204069889. The reversal of 204069881 is 188960402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196140025 + 7929856 = 14005^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 204069881 - 2¹⁴ = 204053497 is a prime.

It is a super-2 number, since 2×204069881² = 83289032662708322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204069889) 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, 102034940 + 102034941.

It is an arithmetic number, because the mean of its divisors is an integer number (102034941).

Almost surely, 2^204069881 is an apocalyptic number.

It is an amenable number.

204069881 is a deficient number, since it is larger than the sum of its proper divisors (1).

204069881 is an equidigital number, since it uses as much as digits as its factorization.

204069881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 204069881 is about 14285.3029719359. The cubic root of 204069881 is about 588.7437418327.

The spelling of 204069881 in words is "two hundred four million, sixty-nine thousand, eight hundred eighty-one".