1267621 has 8 divisors (see below), whose sum is σ = 1324544. Its totient is φ = 1211760.

The previous prime is 1267613. The next prime is 1267633.

1267621 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1267621 - 2³ = 1267613 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 2995 + ... + 3391.

It is an arithmetic number, because the mean of its divisors is an integer number (165568).

2^1267621 is an apocalyptic number.

It is an amenable number.

1267621 is a deficient number, since it is larger than the sum of its proper divisors (56923).

1267621 is a wasteful number, since it uses less digits than its factorization.

1267621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 1008, while the sum is 25.

The square root of 1267621 is about 1125.8867616239. The cubic root of 1267621 is about 108.2255517115.

The spelling of 1267621 in words is "one million, two hundred sixty-seven thousand, six hundred twenty-one".