671269 has 2 divisors, whose sum is σ = 671270. Its totient is φ = 671268.

The previous prime is 671261. The next prime is 671287. The reversal of 671269 is 962176.

671269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 131044 = 735^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 671269 - 2³ = 671261 is a prime.

It is a super-2 number, since 2×671269² = 901204140722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 671269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335634 + 335635.

It is an arithmetic number, because the mean of its divisors is an integer number (335635).

2⁶⁷¹²⁶⁹ is an apocalyptic number.

It is an amenable number.

671269 is a deficient number, since it is larger than the sum of its proper divisors (1).

671269 is an equidigital number, since it uses as much as digits as its factorization.

671269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 671269 is about 819.3100756124. The cubic root of 671269 is about 87.5586110713.

The spelling of 671269 in words is "six hundred seventy-one thousand, two hundred sixty-nine".