87881841 has 20 divisors (see below), whose sum is σ = 132329472. Its totient is φ = 58119768.

The previous prime is 87881837. The next prime is 87881881. The reversal of 87881841 is 14818878.

It is not a de Polignac number, because 87881841 - 2² = 87881837 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87881831) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6016 + ... + 14558.

Almost surely, 2^87881841 is an apocalyptic number.

87881841 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

87881841 is a deficient number, since it is larger than the sum of its proper divisors (44447631).

87881841 is a wasteful number, since it uses less digits than its factorization.

87881841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682 (or 8673 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The square root of 87881841 is about 9374.5315082942. The cubic root of 87881841 is about 444.5968507156.

The spelling of 87881841 in words is "eighty-seven million, eight hundred eighty-one thousand, eight hundred forty-one".