87581037 has 8 divisors (see below), whose sum is σ = 117519136. Its totient is φ = 58015152.

The previous prime is 87581023. The next prime is 87581071. The reversal of 87581037 is 73018578.

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

It is not a de Polignac number, because 87581037 - 2⁶ = 87580973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87580986 and 87581004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87581017) 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, 92503 + ... + 93444.

It is an arithmetic number, because the mean of its divisors is an integer number (14689892).

Almost surely, 2^87581037 is an apocalyptic number.

It is an amenable number.

87581037 is a deficient number, since it is larger than the sum of its proper divisors (29938099).

87581037 is a wasteful number, since it uses less digits than its factorization.

87581037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186107.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 87581037 is about 9358.4740743350. The cubic root of 87581037 is about 444.0890120622.

The spelling of 87581037 in words is "eighty-seven million, five hundred eighty-one thousand, thirty-seven".