770981 has 2 divisors, whose sum is σ = 770982. Its totient is φ = 770980.

The previous prime is 770971. The next prime is 770993. The reversal of 770981 is 189077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749956 + 21025 = 866^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 770981 - 2¹⁴ = 754597 is a prime.

It is a super-2 number, since 2×770981² = 1188823404722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (770951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385490 + 385491.

It is an arithmetic number, because the mean of its divisors is an integer number (385491).

2⁷⁷⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

770981 is a deficient number, since it is larger than the sum of its proper divisors (1).

770981 is an equidigital number, since it uses as much as digits as its factorization.

770981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 770981 is about 878.0552374424. The cubic root of 770981 is about 91.6954723061.

The spelling of 770981 in words is "seven hundred seventy thousand, nine hundred eighty-one".