981610 has 32 divisors (see below), whose sum is σ = 2079360. Its totient is φ = 326592.

The previous prime is 981601. The next prime is 981623. The reversal of 981610 is 16189.

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

It is an unprimeable number.

981610 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 (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2401 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (64980).

2⁹⁸¹⁶¹⁰ is an apocalyptic number.

981610 is an abundant number, since it is smaller than the sum of its proper divisors (1097750).

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

981610 is a wasteful number, since it uses less digits than its factorization.

981610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 981610 is about 990.7623327519. The cubic root of 981610 is about 99.3832034418.

Adding to 981610 its reverse (16189), we get a palindrome (997799).

The spelling of 981610 in words is "nine hundred eighty-one thousand, six hundred ten".