1266445 has 8 divisors (see below), whose sum is σ = 1599840. Its totient is φ = 959760.

The previous prime is 1266431. The next prime is 1266451. The reversal of 1266445 is 5446621.

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

It is not a de Polignac number, because 1266445 - 2⁵ = 1266413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6571 + ... + 6760.

It is an arithmetic number, because the mean of its divisors is an integer number (199980).

2^1266445 is an apocalyptic number.

It is an amenable number.

1266445 is a deficient number, since it is larger than the sum of its proper divisors (333395).

1266445 is a wasteful number, since it uses less digits than its factorization.

1266445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355.

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

The square root of 1266445 is about 1125.3643854326. The cubic root of 1266445 is about 108.1920736116.

It can be divided in two parts, 1266 and 445, that added together give a triangular number (1711 = T₅₈).

The spelling of 1266445 in words is "one million, two hundred sixty-six thousand, four hundred forty-five".