1266985 has 8 divisors (see below), whose sum is σ = 1532160. Its totient is φ = 1005744.

The previous prime is 1266953. The next prime is 1267009. The reversal of 1266985 is 5896621.

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 1266985 - 2⁵ = 1266953 is a prime.

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, 217 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

2^1266985 is an apocalyptic number.

It is an amenable number.

1266985 is a deficient number, since it is larger than the sum of its proper divisors (265175).

1266985 is a wasteful number, since it uses less digits than its factorization.

1266985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967.

The product of its digits is 25920, while the sum is 37.

The square root of 1266985 is about 1125.6042821525. The cubic root of 1266985 is about 108.2074487807.

The spelling of 1266985 in words is "one million, two hundred sixty-six thousand, nine hundred eighty-five".