1355705 has 8 divisors (see below), whose sum is σ = 1752072. Its totient is φ = 1001088.

The previous prime is 1355693. The next prime is 1355713. The reversal of 1355705 is 5075531.

It can be written as a sum of positive squares in 4 ways, for example, as 249001 + 1106704 = 499^2 + 1052^2 .

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 1355705 - 2⁸ = 1355449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10364 + ... + 10493.

It is an arithmetic number, because the mean of its divisors is an integer number (219009).

2^1355705 is an apocalyptic number.

It is an amenable number.

1355705 is a deficient number, since it is larger than the sum of its proper divisors (396367).

1355705 is a wasteful number, since it uses less digits than its factorization.

1355705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20875.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 1355705 is about 1164.3474567327. The cubic root of 1355705 is about 110.6764106112.

The spelling of 1355705 in words is "one million, three hundred fifty-five thousand, seven hundred five".