7916987 has 4 divisors (see below), whose sum is σ = 8526000. Its totient is φ = 7307976.

The previous prime is 7916963. The next prime is 7917011. The reversal of 7916987 is 7896197.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (7916963) and next prime (7917011).

It is not a de Polignac number, because 7916987 - 2¹⁶ = 7851451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7916947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304487 + ... + 304512.

It is an arithmetic number, because the mean of its divisors is an integer number (2131500).

Almost surely, 2^7916987 is an apocalyptic number.

7916987 is a deficient number, since it is larger than the sum of its proper divisors (609013).

7916987 is a wasteful number, since it uses less digits than its factorization.

7916987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609012.

The product of its digits is 190512, while the sum is 47.

The square root of 7916987 is about 2813.7140935070. The cubic root of 7916987 is about 199.3058183468.

The spelling of 7916987 in words is "seven million, nine hundred sixteen thousand, nine hundred eighty-seven".