966140261 has 2 divisors, whose sum is σ = 966140262. Its totient is φ = 966140260.

The previous prime is 966140221. The next prime is 966140299. The reversal of 966140261 is 162041669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 913852900 + 52287361 = 30230^2 + 7231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-966140261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (966140221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483070130 + 483070131.

It is an arithmetic number, because the mean of its divisors is an integer number (483070131).

Almost surely, 2^966140261 is an apocalyptic number.

It is an amenable number.

966140261 is a deficient number, since it is larger than the sum of its proper divisors (1).

966140261 is an equidigital number, since it uses as much as digits as its factorization.

966140261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 966140261 is about 31082.7968657906. The cubic root of 966140261 is about 988.5835817116.

The spelling of 966140261 in words is "nine hundred sixty-six million, one hundred forty thousand, two hundred sixty-one".