961777 has 2 divisors, whose sum is σ = 961778. Its totient is φ = 961776.

The previous prime is 961769. The next prime is 961783. The reversal of 961777 is 777169.

961777 is nontrivially palindromic in base 9.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531441 + 430336 = 729^2 + 656^2 .

It is an emirp because it is prime and its reverse (777169) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 961777 - 2³ = 961769 is a prime.

It is not a weakly prime, because it can be changed into another prime (961747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480888 + 480889.

It is an arithmetic number, because the mean of its divisors is an integer number (480889).

2⁹⁶¹⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

961777 is a deficient number, since it is larger than the sum of its proper divisors (1).

961777 is an equidigital number, since it uses as much as digits as its factorization.

961777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18522, while the sum is 37.

The square root of 961777 is about 980.7022993753. The cubic root of 961777 is about 98.7093129398.

The spelling of 961777 in words is "nine hundred sixty-one thousand, seven hundred seventy-seven".