965798261 has 2 divisors, whose sum is σ = 965798262. Its totient is φ = 965798260.

The previous prime is 965798219. The next prime is 965798263. The reversal of 965798261 is 162897569.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 936972100 + 28826161 = 30610^2 + 5369^2 .

It is a cyclic number.

It is not a de Polignac number, because 965798261 - 2¹⁴ = 965781877 is a prime.

Together with 965798263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (965798263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482899130 + 482899131.

It is an arithmetic number, because the mean of its divisors is an integer number (482899131).

Almost surely, 2^965798261 is an apocalyptic number.

It is an amenable number.

965798261 is a deficient number, since it is larger than the sum of its proper divisors (1).

965798261 is an equidigital number, since it uses as much as digits as its factorization.

965798261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 53.

The square root of 965798261 is about 31077.2949434149. The cubic root of 965798261 is about 988.4669197388.

The spelling of 965798261 in words is "nine hundred sixty-five million, seven hundred ninety-eight thousand, two hundred sixty-one".