981616 has 20 divisors (see below), whose sum is σ = 2002600. Its totient is φ = 464832.

The previous prime is 981601. The next prime is 981623. The reversal of 981616 is 616189.

It is a happy number.

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

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311 + ... + 1918.

It is an arithmetic number, because the mean of its divisors is an integer number (100130).

2⁹⁸¹⁶¹⁶ is an apocalyptic number.

It is an amenable number.

981616 is an abundant number, since it is smaller than the sum of its proper divisors (1020984).

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

981616 is a wasteful number, since it uses less digits than its factorization.

981616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256 (or 3250 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 981616 is about 990.7653607187. The cubic root of 981616 is about 99.3834059316.

The spelling of 981616 in words is "nine hundred eighty-one thousand, six hundred sixteen".