855005 has 8 divisors (see below), whose sum is σ = 1031424. Its totient is φ = 680400.

The previous prime is 854999. The next prime is 855031. The reversal of 855005 is 500558.

It is a happy number.

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

It is not a de Polignac number, because 855005 - 2¹⁰ = 853981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 1040 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (128928).

2⁸⁵⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

855005 is a deficient number, since it is larger than the sum of its proper divisors (176419).

855005 is a wasteful number, since it uses less digits than its factorization.

855005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 855005 is about 924.6648041317. The cubic root of 855005 is about 94.9123845940.

The spelling of 855005 in words is "eight hundred fifty-five thousand, five".