12987085 has 8 divisors (see below), whose sum is σ = 15739416. Its totient is φ = 10286400.

The previous prime is 12987077. The next prime is 12987097. The reversal of 12987085 is 58078921.

12987085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4932841 + 8054244 = 2221^2 + 2838^2 .

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

It is not a de Polignac number, because 12987085 - 2³ = 12987077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12354 + ... + 13363.

It is an arithmetic number, because the mean of its divisors is an integer number (1967427).

Almost surely, 2^12987085 is an apocalyptic number.

It is an amenable number.

12987085 is a deficient number, since it is larger than the sum of its proper divisors (2752331).

12987085 is a wasteful number, since it uses less digits than its factorization.

12987085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25823.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 12987085 is about 3603.7598421648. The cubic root of 12987085 is about 235.0555776199.

The spelling of 12987085 in words is "twelve million, nine hundred eighty-seven thousand, eighty-five".