771073 has 2 divisors, whose sum is σ = 771074. Its totient is φ = 771072.

The previous prime is 771049. The next prime is 771079. The reversal of 771073 is 370177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 552049 + 219024 = 743^2 + 468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-771073 is a prime.

771073 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (771079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385536 + 385537.

It is an arithmetic number, because the mean of its divisors is an integer number (385537).

It is a Proth number, since it is equal to 753 ⋅ 2¹⁰ + 1 and 753 < 2¹⁰.

2⁷⁷¹⁰⁷³ is an apocalyptic number.

It is an amenable number.

771073 is a deficient number, since it is larger than the sum of its proper divisors (1).

771073 is an equidigital number, since it uses as much as digits as its factorization.

771073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1029, while the sum is 25.

The square root of 771073 is about 878.1076243833. The cubic root of 771073 is about 91.6991194552.

It can be divided in two parts, 77 and 1073, that multiplied together give a triangular number (82621 = T₄₀₆).

The spelling of 771073 in words is "seven hundred seventy-one thousand, seventy-three", and thus it is an iban number.