671769 has 12 divisors (see below), whose sum is σ = 1109056. Its totient is φ = 383832.

The previous prime is 671753. The next prime is 671777. The reversal of 671769 is 967176.

It is not a de Polignac number, because 671769 - 2⁴ = 671753 is a prime.

It is a super-2 number, since 2×671769² = 902547178722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671729) 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, 5269 + ... + 5394.

2⁶⁷¹⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

671769 is a deficient number, since it is larger than the sum of its proper divisors (437287).

671769 is a wasteful number, since it uses less digits than its factorization.

671769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676 (or 10673 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 671769 is about 819.6151535934. The cubic root of 671769 is about 87.5803452495.

It can be divided in two parts, 6717 and 69, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 671769 in words is "six hundred seventy-one thousand, seven hundred sixty-nine".