771049 has 2 divisors, whose sum is σ = 771050. Its totient is φ = 771048.

The previous prime is 771047. The next prime is 771073. The reversal of 771049 is 940177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 235225 = 732^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 771049 - 2¹ = 771047 is a prime.

Together with 771047, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

771049 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (771047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385524 + 385525.

It is an arithmetic number, because the mean of its divisors is an integer number (385525).

2⁷⁷¹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

771049 is a deficient number, since it is larger than the sum of its proper divisors (1).

771049 is an equidigital number, since it uses as much as digits as its factorization.

771049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 771049 is about 878.0939585261. The cubic root of 771049 is about 91.6981680530.

The spelling of 771049 in words is "seven hundred seventy-one thousand, forty-nine".