890680 has 32 divisors (see below), whose sum is σ = 2291040. Its totient is φ = 305280.

The previous prime is 890671. The next prime is 890683. The reversal of 890680 is 86098.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890683) by changing a digit.

890680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1311 + ... + 1870.

It is an arithmetic number, because the mean of its divisors is an integer number (71595).

2⁸⁹⁰⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

890680 is an abundant number, since it is smaller than the sum of its proper divisors (1400360).

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

890680 is a wasteful number, since it uses less digits than its factorization.

890680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199 (or 3195 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 890680 is about 943.7584436708. The cubic root of 890680 is about 96.2145087564.

The spelling of 890680 in words is "eight hundred ninety thousand, six hundred eighty".