87585740 has 24 divisors (see below), whose sum is σ = 200651472. Its totient is φ = 31849280.

The previous prime is 87585709. The next prime is 87585749. The reversal of 87585740 is 4758578.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 87585691 and 87585700.

It is not an unprimeable number, because it can be changed into a prime (87585749) 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, 198839 + ... + 199278.

It is an arithmetic number, because the mean of its divisors is an integer number (8360478).

Almost surely, 2^87585740 is an apocalyptic number.

It is an amenable number.

87585740 is an abundant number, since it is smaller than the sum of its proper divisors (113065732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87585740 is a wasteful number, since it uses less digits than its factorization.

87585740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398137 (or 398135 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 87585740 is about 9358.7253405579. The cubic root of 87585740 is about 444.0969609413.

The spelling of 87585740 in words is "eighty-seven million, five hundred eighty-five thousand, seven hundred forty".