87042585 has 16 divisors (see below), whose sum is σ = 159163776. Its totient is φ = 39790848.

The previous prime is 87042583. The next prime is 87042617. The reversal of 87042585 is 58524078.

It is not a de Polignac number, because 87042585 - 2¹ = 87042583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87042583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414384 + ... + 414593.

It is an arithmetic number, because the mean of its divisors is an integer number (9947736).

Almost surely, 2^87042585 is an apocalyptic number.

It is an amenable number.

87042585 is a deficient number, since it is larger than the sum of its proper divisors (72121191).

87042585 is a wasteful number, since it uses less digits than its factorization.

87042585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828992.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 87042585 is about 9329.6615694247. The cubic root of 87042585 is about 443.1770477569.

The spelling of 87042585 in words is "eighty-seven million, forty-two thousand, five hundred eighty-five".