771481 has 2 divisors, whose sum is σ = 771482. Its totient is φ = 771480.

The previous prime is 771473. The next prime is 771499. The reversal of 771481 is 184177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 665856 + 105625 = 816^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 771481 - 2³ = 771473 is a prime.

It is a super-2 number, since 2×771481² = 1190365866722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (771401) 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, 385740 + 385741.

It is an arithmetic number, because the mean of its divisors is an integer number (385741).

2⁷⁷¹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

771481 is a deficient number, since it is larger than the sum of its proper divisors (1).

771481 is an equidigital number, since it uses as much as digits as its factorization.

771481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 28.

The square root of 771481 is about 878.3399114238. The cubic root of 771481 is about 91.7152902734.

The spelling of 771481 in words is "seven hundred seventy-one thousand, four hundred eighty-one".