981774 has 16 divisors (see below), whose sum is σ = 2181840. Its totient is φ = 327240.

The previous prime is 981769. The next prime is 981797. The reversal of 981774 is 477189.

It is an Ulam 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, 9037 + ... + 9144.

It is an arithmetic number, because the mean of its divisors is an integer number (136365).

2⁹⁸¹⁷⁷⁴ is an apocalyptic number.

981774 is an abundant number, since it is smaller than the sum of its proper divisors (1200066).

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

981774 is a wasteful number, since it uses less digits than its factorization.

981774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18192 (or 18186 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 981774 is about 990.8450938467. The cubic root of 981774 is about 99.3887378658.

The spelling of 981774 in words is "nine hundred eighty-one thousand, seven hundred seventy-four".