881643 has 8 divisors (see below), whose sum is σ = 1343488. Its totient is φ = 503784.

The previous prime is 881641. The next prime is 881663. The reversal of 881643 is 346188.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 881643 - 2¹ = 881641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 881643.

It is not an unprimeable number, because it can be changed into a prime (881641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20971 + ... + 21012.

It is an arithmetic number, because the mean of its divisors is an integer number (167936).

2⁸⁸¹⁶⁴³ is an apocalyptic number.

881643 is a deficient number, since it is larger than the sum of its proper divisors (461845).

881643 is a wasteful number, since it uses less digits than its factorization.

881643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41993.

The product of its digits is 4608, while the sum is 30.

The square root of 881643 is about 938.9584655351. The cubic root of 881643 is about 95.8879987214.

The spelling of 881643 in words is "eight hundred eighty-one thousand, six hundred forty-three".