770664481 has 2 divisors, whose sum is σ = 770664482. Its totient is φ = 770664480.

The previous prime is 770664469. The next prime is 770664493. The reversal of 770664481 is 184466077.

It is a balanced prime because it is at equal distance from previous prime (770664469) and next prime (770664493).

It can be written as a sum of positive squares in only one way, i.e., 770562081 + 102400 = 27759^2 + 320^2 .

It is an emirp because it is prime and its reverse (184466077) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 770664481 - 2¹¹ = 770662433 is a prime.

It is a super-2 number, since 2×770664481² = 1187847484549998722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (770664421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385332240 + 385332241.

It is an arithmetic number, because the mean of its divisors is an integer number (385332241).

Almost surely, 2^770664481 is an apocalyptic number.

It is an amenable number.

770664481 is a deficient number, since it is larger than the sum of its proper divisors (1).

770664481 is an equidigital number, since it uses as much as digits as its factorization.

770664481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 770664481 is about 27760.8443855730. The cubic root of 770664481 is about 916.8292235056.

The spelling of 770664481 in words is "seven hundred seventy million, six hundred sixty-four thousand, four hundred eighty-one".