7987615 has 16 divisors (see below), whose sum is σ = 10241280. Its totient is φ = 5967360.

The previous prime is 7987613. The next prime is 7987627. The reversal of 7987615 is 5167897.

7987615 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7987615 - 2¹ = 7987613 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987613) 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, 3607 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (640080).

Almost surely, 2^7987615 is an apocalyptic number.

7987615 is a deficient number, since it is larger than the sum of its proper divisors (2253665).

7987615 is a wasteful number, since it uses less digits than its factorization.

7987615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842.

The product of its digits is 105840, while the sum is 43.

The square root of 7987615 is about 2826.2368973602. The cubic root of 7987615 is about 199.8967383610.

The spelling of 7987615 in words is "seven million, nine hundred eighty-seven thousand, six hundred fifteen".