1266057 has 16 divisors (see below), whose sum is σ = 2020480. Its totient is φ = 778896.

The previous prime is 1266047. The next prime is 1266059. The reversal of 1266057 is 7506621.

It is not a de Polignac number, because 1266057 - 2⁶ = 1265993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

1266057 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1266057.

It is not an unprimeable number, because it can be changed into a prime (1266059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1453 + ... + 2154.

It is an arithmetic number, because the mean of its divisors is an integer number (126280).

2^1266057 is an apocalyptic number.

It is an amenable number.

1266057 is a deficient number, since it is larger than the sum of its proper divisors (754423).

1266057 is a wasteful number, since it uses less digits than its factorization.

1266057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629 (or 3623 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1266057 is about 1125.1919836188. The cubic root of 1266057 is about 108.1810235694.

The spelling of 1266057 in words is "one million, two hundred sixty-six thousand, fifty-seven".