262798961 has 2 divisors, whose sum is σ = 262798962. Its totient is φ = 262798960.

The previous prime is 262798927. The next prime is 262798981. The reversal of 262798961 is 169897262.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248661361 + 14137600 = 15769^2 + 3760^2 .

It is a cyclic number.

It is not a de Polignac number, because 262798961 - 2²⁶ = 195690097 is a prime.

It is a super-3 number, since 3×262798961³ (a number of 26 digits) contains 333 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 (262798981) 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 as a sum of consecutive naturals, namely, 131399480 + 131399481.

It is an arithmetic number, because the mean of its divisors is an integer number (131399481).

Almost surely, 2^262798961 is an apocalyptic number.

It is an amenable number.

262798961 is a deficient number, since it is larger than the sum of its proper divisors (1).

262798961 is an equidigital number, since it uses as much as digits as its factorization.

262798961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 262798961 is about 16211.0752573665. The cubic root of 262798961 is about 640.5325653380.

The spelling of 262798961 in words is "two hundred sixty-two million, seven hundred ninety-eight thousand, nine hundred sixty-one".