771057 has 12 divisors (see below), whose sum is σ = 1272960. Its totient is φ = 440568.

The previous prime is 771049. The next prime is 771073. The reversal of 771057 is 750177.

It is not a de Polignac number, because 771057 - 2³ = 771049 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

771057 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 771057.

It is not an unprimeable number, because it can be changed into a prime (771037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6057 + ... + 6182.

It is an arithmetic number, because the mean of its divisors is an integer number (106080).

2⁷⁷¹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

771057 is a deficient number, since it is larger than the sum of its proper divisors (501903).

771057 is a wasteful number, since it uses less digits than its factorization.

771057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12252 (or 12249 counting only the distinct ones).

The product of its (nonzero) digits is 1715, while the sum is 27.

The square root of 771057 is about 878.0985138354. The cubic root of 771057 is about 91.6984851892.

The spelling of 771057 in words is "seven hundred seventy-one thousand, fifty-seven".