1266455 has 8 divisors (see below), whose sum is σ = 1527504. Its totient is φ = 1008000.

The previous prime is 1266451. The next prime is 1266469. The reversal of 1266455 is 5546621.

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

It is not a de Polignac number, because 1266455 - 2² = 1266451 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 (1266451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680 + ... + 1730.

It is an arithmetic number, because the mean of its divisors is an integer number (190938).

2^1266455 is an apocalyptic number.

1266455 is a deficient number, since it is larger than the sum of its proper divisors (261049).

1266455 is a wasteful number, since it uses less digits than its factorization.

1266455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its digits is 7200, while the sum is 29.

The square root of 1266455 is about 1125.3688284292. The cubic root of 1266455 is about 108.1923583767.

The spelling of 1266455 in words is "one million, two hundred sixty-six thousand, four hundred fifty-five".