881395664 has 20 divisors (see below), whose sum is σ = 1719994080. Its totient is φ = 437526240.

The previous prime is 881395663. The next prime is 881395679. The reversal of 881395664 is 466593188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881395663) 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, 195932 + ... + 200379.

It is an arithmetic number, because the mean of its divisors is an integer number (85999704).

Almost surely, 2^881395664 is an apocalyptic number.

It is an amenable number.

881395664 is a deficient number, since it is larger than the sum of its proper divisors (838598416).

881395664 is a wasteful number, since it uses less digits than its factorization.

881395664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396458 (or 396452 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 881395664 is about 29688.3085405686. The cubic root of 881395664 is about 958.7903108102.

The spelling of 881395664 in words is "eight hundred eighty-one million, three hundred ninety-five thousand, six hundred sixty-four".