881168564 has 12 divisors (see below), whose sum is σ = 1557943044. Its totient is φ = 436041984.

The previous prime is 881168551. The next prime is 881168569. The reversal of 881168564 is 465861188.

It can be written as a sum of positive squares in 2 ways, for example, as 734952100 + 146216464 = 27110^2 + 12092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881168569) 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, 1135139 + ... + 1135914.

It is an arithmetic number, because the mean of its divisors is an integer number (129828587).

Almost surely, 2^881168564 is an apocalyptic number.

It is an amenable number.

881168564 is a deficient number, since it is larger than the sum of its proper divisors (676774480).

881168564 is a wasteful number, since it uses less digits than its factorization.

881168564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271154 (or 2271152 counting only the distinct ones).

The product of its digits is 368640, while the sum is 47.

The square root of 881168564 is about 29684.4835562285. The cubic root of 881168564 is about 958.7079565804.

The spelling of 881168564 in words is "eight hundred eighty-one million, one hundred sixty-eight thousand, five hundred sixty-four".