881001 has 18 divisors (see below), whose sum is σ = 1400490. Its totient is φ = 533280.

The previous prime is 880993. The next prime is 881003. The reversal of 881001 is 100188.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 853776 + 27225 = 924^2 + 165^2 .

It is not a de Polignac number, because 881001 - 2³ = 880993 is a prime.

881001 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 881001.

It is not an unprimeable number, because it can be changed into a prime (881003) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 685 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (77805).

2⁸⁸¹⁰⁰¹ is an apocalyptic number.

It is an amenable number.

881001 is a deficient number, since it is larger than the sum of its proper divisors (519489).

881001 is a wasteful number, since it uses less digits than its factorization.

881001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 881001 is about 938.6165351196. The cubic root of 881001 is about 95.8647183069.

Adding to 881001 its reverse (100188), we get a palindrome (981189).

It can be divided in two parts, 88 and 1001, that multiplied together give a palindrome (88088).

The spelling of 881001 in words is "eight hundred eighty-one thousand, one".