87081958 has 8 divisors (see below), whose sum is σ = 130693752. Its totient is φ = 43517376.

The previous prime is 87081941. The next prime is 87081989. The reversal of 87081958 is 85918078.

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

It is a super-2 number, since 2×87081958² = 15166534818227528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6760 + ... + 14827.

It is an arithmetic number, because the mean of its divisors is an integer number (16336719).

Almost surely, 2^87081958 is an apocalyptic number.

87081958 is a deficient number, since it is larger than the sum of its proper divisors (43611794).

87081958 is a wasteful number, since it uses less digits than its factorization.

87081958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23606.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 87081958 is about 9331.7714288339. The cubic root of 87081958 is about 443.2438601858.

It can be divided in two parts, 870 and 81958, that added together give a palindrome (82828).

The spelling of 87081958 in words is "eighty-seven million, eighty-one thousand, nine hundred fifty-eight".