981656 has 16 divisors (see below), whose sum is σ = 1982400. Its totient is φ = 453024.

The previous prime is 981653. The next prime is 981683. The reversal of 981656 is 656189.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4616 + ... + 4823.

It is an arithmetic number, because the mean of its divisors is an integer number (123900).

2⁹⁸¹⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

981656 is an abundant number, since it is smaller than the sum of its proper divisors (1000744).

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

981656 is a wasteful number, since it uses less digits than its factorization.

981656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9458 (or 9454 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 981656 is about 990.7855469273. The cubic root of 981656 is about 99.3847558425.

The spelling of 981656 in words is "nine hundred eighty-one thousand, six hundred fifty-six".