881634 has 32 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 266112.

The previous prime is 881611. The next prime is 881641. The reversal of 881634 is 436188.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

881634 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6879 + ... + 7005.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁸⁸¹⁶³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 881634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (967680).

881634 is an abundant number, since it is smaller than the sum of its proper divisors (1053726).

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

881634 is a wasteful number, since it uses less digits than its factorization.

881634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

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

The square root of 881634 is about 938.9536729786. The cubic root of 881634 is about 95.8876724386.

The spelling of 881634 in words is "eight hundred eighty-one thousand, six hundred thirty-four".