881642 has 4 divisors (see below), whose sum is σ = 1322466. Its totient is φ = 440820.

The previous prime is 881641. The next prime is 881663. The reversal of 881642 is 246188.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808201 + 73441 = 899^2 + 271^2 .

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220409 + ... + 220412.

2⁸⁸¹⁶⁴² is an apocalyptic number.

881642 is a deficient number, since it is larger than the sum of its proper divisors (440824).

881642 is a wasteful number, since it uses less digits than its factorization.

881642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440823.

The product of its digits is 3072, while the sum is 29.

The square root of 881642 is about 938.9579330300. The cubic root of 881642 is about 95.8879624679.

The spelling of 881642 in words is "eight hundred eighty-one thousand, six hundred forty-two".