1356985 has 16 divisors (see below), whose sum is σ = 1881216. Its totient is φ = 920448.

The previous prime is 1356973. The next prime is 1357001. The reversal of 1356985 is 5896531.

It is a cyclic number.

It is not a de Polignac number, because 1356985 - 2⁷ = 1356857 is a prime.

It is a Duffinian number.

Its product of digits (32400) is a multiple of the sum of its prime divisors (432).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4654 + ... + 4936.

It is an arithmetic number, because the mean of its divisors is an integer number (117576).

2^1356985 is an apocalyptic number.

It is an amenable number.

1356985 is a deficient number, since it is larger than the sum of its proper divisors (524231).

1356985 is a wasteful number, since it uses less digits than its factorization.

1356985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its digits is 32400, while the sum is 37.

The square root of 1356985 is about 1164.8969911542. The cubic root of 1356985 is about 110.7112316684.

The spelling of 1356985 in words is "one million, three hundred fifty-six thousand, nine hundred eighty-five".