881651 has 4 divisors (see below), whose sum is σ = 886704. Its totient is φ = 876600.

The previous prime is 881641. The next prime is 881663. The reversal of 881651 is 156188.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881651 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255 + ... + 2616.

It is an arithmetic number, because the mean of its divisors is an integer number (221676).

2⁸⁸¹⁶⁵¹ is an apocalyptic number.

881651 is a deficient number, since it is larger than the sum of its proper divisors (5053).

881651 is a wasteful number, since it uses less digits than its factorization.

881651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052.

The product of its digits is 1920, while the sum is 29.

The square root of 881651 is about 938.9627255648. The cubic root of 881651 is about 95.8882887488. Note that the first 3 decimals are identical.

The spelling of 881651 in words is "eight hundred eighty-one thousand, six hundred fifty-one".