1267671 has 4 divisors (see below), whose sum is σ = 1690232. Its totient is φ = 845112.

The previous prime is 1267663. The next prime is 1267681. The reversal of 1267671 is 1767621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1767621 = 3 ⋅589207.

It is not a de Polignac number, because 1267671 - 2³ = 1267663 is a prime.

It is a D-number.

It is a Duffinian number.

1267671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211276 + ... + 211281.

It is an arithmetic number, because the mean of its divisors is an integer number (422558).

2^1267671 is an apocalyptic number.

1267671 is a deficient number, since it is larger than the sum of its proper divisors (422561).

1267671 is an equidigital number, since it uses as much as digits as its factorization.

1267671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422560.

The product of its digits is 3528, while the sum is 30.

The square root of 1267671 is about 1125.9089661247. The cubic root of 1267671 is about 108.2269746411.

The spelling of 1267671 in words is "one million, two hundred sixty-seven thousand, six hundred seventy-one".