87443685 has 48 divisors (see below), whose sum is σ = 180849600. Its totient is φ = 39971232.

The previous prime is 87443627. The next prime is 87443687. The reversal of 87443685 is 58634478.

It is not a de Polignac number, because 87443685 - 2⁶ = 87443621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87443685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87443687) 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 47 ways as a sum of consecutive naturals, for example, 6 + ... + 13224.

It is an arithmetic number, because the mean of its divisors is an integer number (3767700).

Almost surely, 2^87443685 is an apocalyptic number.

It is an amenable number.

87443685 is an abundant number, since it is smaller than the sum of its proper divisors (93405915).

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

87443685 is a wasteful number, since it uses less digits than its factorization.

87443685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13247 (or 13234 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 87443685 is about 9351.1328190760. The cubic root of 87443685 is about 443.8567379287.

The spelling of 87443685 in words is "eighty-seven million, four hundred forty-three thousand, six hundred eighty-five".