921085 has 8 divisors (see below), whose sum is σ = 1205856. Its totient is φ = 669840.

The previous prime is 921079. The next prime is 921091. The reversal of 921085 is 580129.

It is an interprime number because it is at equal distance from previous prime (921079) and next prime (921091).

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

It is not a de Polignac number, because 921085 - 2⁷ = 920957 is a prime.

It is a Duffinian number.

It is a congruent 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, 8319 + ... + 8428.

It is an arithmetic number, because the mean of its divisors is an integer number (150732).

2⁹²¹⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

921085 is a deficient number, since it is larger than the sum of its proper divisors (284771).

921085 is a wasteful number, since it uses less digits than its factorization.

921085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16763.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 921085 is about 959.7317333505. The cubic root of 921085 is about 97.2971016186.

The spelling of 921085 in words is "nine hundred twenty-one thousand, eighty-five".