981594 has 24 divisors (see below), whose sum is σ = 2220192. Its totient is φ = 312840.

The previous prime is 981587. The next prime is 981599. The reversal of 981594 is 495189.

It is not an unprimeable number, because it can be changed into a prime (981599) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 772 + ... + 1599.

It is an arithmetic number, because the mean of its divisors is an integer number (92508).

2⁹⁸¹⁵⁹⁴ is an apocalyptic number.

981594 is an abundant number, since it is smaller than the sum of its proper divisors (1238598).

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

981594 is a wasteful number, since it uses less digits than its factorization.

981594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402 (or 2399 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 981594 is about 990.7542581286. The cubic root of 981594 is about 99.3826634650.

The spelling of 981594 in words is "nine hundred eighty-one thousand, five hundred ninety-four".