890634 has 8 divisors (see below), whose sum is σ = 1781280. Its totient is φ = 296876.

The previous prime is 890609. The next prime is 890653. The reversal of 890634 is 436098.

890634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

890634 is an admirable number.

It is an Ulam number.

It is an unprimeable number.

890634 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74214 + ... + 74225.

It is an arithmetic number, because the mean of its divisors is an integer number (222660).

2⁸⁹⁰⁶³⁴ is an apocalyptic number.

890634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

890634 is a wasteful number, since it uses less digits than its factorization.

890634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148444.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 890634 is about 943.7340727133. The cubic root of 890634 is about 96.2128523651.

The spelling of 890634 in words is "eight hundred ninety thousand, six hundred thirty-four".