87081983 has 8 divisors (see below), whose sum is σ = 90629280. Its totient is φ = 83571040.

The previous prime is 87081941. The next prime is 87081989. The reversal of 87081983 is 38918078.

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

It is not a de Polignac number, because 87081983 - 2⁸ = 87081727 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 (87081989) 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, 4148 + ... + 13833.

It is an arithmetic number, because the mean of its divisors is an integer number (11328660).

Almost surely, 2^87081983 is an apocalyptic number.

87081983 is a deficient number, since it is larger than the sum of its proper divisors (3547297).

87081983 is a wasteful number, since it uses less digits than its factorization.

87081983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18177.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 87081983 is about 9331.7727683436. The cubic root of 87081983 is about 443.2439026021.

The spelling of 87081983 in words is "eighty-seven million, eighty-one thousand, nine hundred eighty-three".