87417881 has 8 divisors (see below), whose sum is σ = 89100960. Its totient is φ = 85741632.

The previous prime is 87417877. The next prime is 87417887. The reversal of 87417881 is 18871478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87417881 - 2² = 87417877 is a prime.

It is a super-2 number, since 2×87417881² = 15283771837060322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87417887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29441 + ... + 32273.

It is an arithmetic number, because the mean of its divisors is an integer number (11137620).

Almost surely, 2^87417881 is an apocalyptic number.

It is an amenable number.

87417881 is a deficient number, since it is larger than the sum of its proper divisors (1683079).

87417881 is a wasteful number, since it uses less digits than its factorization.

87417881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3415.

The product of its digits is 100352, while the sum is 44.

The square root of 87417881 is about 9349.7529913897. The cubic root of 87417881 is about 443.8130739941.

The spelling of 87417881 in words is "eighty-seven million, four hundred seventeen thousand, eight hundred eighty-one".