890745 has 16 divisors (see below), whose sum is σ = 1459392. Its totient is φ = 463680.

The previous prime is 890737. The next prime is 890761. The reversal of 890745 is 547098.

It is not a de Polignac number, because 890745 - 2³ = 890737 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 15 ways as a sum of consecutive naturals, for example, 46 + ... + 1335.

It is an arithmetic number, because the mean of its divisors is an integer number (91212).

2⁸⁹⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

890745 is a deficient number, since it is larger than the sum of its proper divisors (568647).

890745 is a wasteful number, since it uses less digits than its factorization.

890745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 890745 is about 943.7928798206. The cubic root of 890745 is about 96.2168492119.

The spelling of 890745 in words is "eight hundred ninety thousand, seven hundred forty-five".