87337581 has 8 divisors (see below), whose sum is σ = 117924480. Its totient is φ = 57487872.

The previous prime is 87337567. The next prime is 87337603. The reversal of 87337581 is 18573378.

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

It is not a de Polignac number, because 87337581 - 2¹⁵ = 87304813 is a prime.

It is a super-2 number, since 2×87337581² = 15255706109863122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87337541) 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, 184020 + ... + 184493.

It is an arithmetic number, because the mean of its divisors is an integer number (14740560).

Almost surely, 2^87337581 is an apocalyptic number.

It is an amenable number.

87337581 is a deficient number, since it is larger than the sum of its proper divisors (30586899).

87337581 is a wasteful number, since it uses less digits than its factorization.

87337581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368595.

The product of its digits is 141120, while the sum is 42.

The square root of 87337581 is about 9345.4577736995. The cubic root of 87337581 is about 443.6771402959.

The spelling of 87337581 in words is "eighty-seven million, three hundred thirty-seven thousand, five hundred eighty-one".