1266544 has 10 divisors (see below), whose sum is σ = 2453960. Its totient is φ = 633264.

The previous prime is 1266539. The next prime is 1266557. The reversal of 1266544 is 4456621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39564 + ... + 39595.

It is an arithmetic number, because the mean of its divisors is an integer number (245396).

2^1266544 is an apocalyptic number.

It is an amenable number.

1266544 is a deficient number, since it is larger than the sum of its proper divisors (1187416).

1266544 is an equidigital number, since it uses as much as digits as its factorization.

1266544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79167 (or 79161 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1266544 is about 1125.4083703261. The cubic root of 1266544 is about 108.1948927198.

It can be divided in two parts, 126 and 6544, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 1266544 in words is "one million, two hundred sixty-six thousand, five hundred forty-four".