87143485 has 32 divisors (see below), whose sum is σ = 123564672. Its totient is φ = 58164480.

The previous prime is 87143477. The next prime is 87143533. The reversal of 87143485 is 58434178.

It is not a de Polignac number, because 87143485 - 2³ = 87143477 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219307 + ... + 219703.

It is an arithmetic number, because the mean of its divisors is an integer number (3861396).

Almost surely, 2^87143485 is an apocalyptic number.

It is an amenable number.

87143485 is a deficient number, since it is larger than the sum of its proper divisors (36421187).

87143485 is a wasteful number, since it uses less digits than its factorization.

87143485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its digits is 107520, while the sum is 40.

The square root of 87143485 is about 9335.0674877046. The cubic root of 87143485 is about 443.3482256415.

The spelling of 87143485 in words is "eighty-seven million, one hundred forty-three thousand, four hundred eighty-five".