881787487 has 8 divisors (see below), whose sum is σ = 1028324000. Its totient is φ = 755817552.

The previous prime is 881787481. The next prime is 881787497. The reversal of 881787487 is 784787188.

881787487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-881787487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881787481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1285062 + ... + 1285747.

It is an arithmetic number, because the mean of its divisors is an integer number (128540500).

Almost surely, 2^881787487 is an apocalyptic number.

881787487 is a deficient number, since it is larger than the sum of its proper divisors (146536513).

881787487 is an equidigital number, since it uses as much as digits as its factorization.

881787487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570830 (or 2570816 counting only the distinct ones).

The product of its digits is 5619712, while the sum is 58.

The square root of 881787487 is about 29694.9067518320. The cubic root of 881787487 is about 958.9323659834.

The spelling of 881787487 in words is "eight hundred eighty-one million, seven hundred eighty-seven thousand, four hundred eighty-seven".