881616 has 20 divisors (see below), whose sum is σ = 2277632. Its totient is φ = 293856.

The previous prime is 881611. The next prime is 881641. The reversal of 881616 is 616188.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881611) by changing a digit.

881616 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136 + ... + 9231.

2⁸⁸¹⁶¹⁶ is an apocalyptic number.

It is an amenable number.

881616 is an abundant number, since it is smaller than the sum of its proper divisors (1396016).

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

881616 is a wasteful number, since it uses less digits than its factorization.

881616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18378 (or 18372 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 881616 is about 938.9440877922. The cubic root of 881616 is about 95.8870198663.

The spelling of 881616 in words is "eight hundred eighty-one thousand, six hundred sixteen".