7887965 has 16 divisors (see below), whose sum is σ = 9980928. Its totient is φ = 5972736.

The previous prime is 7887959. The next prime is 7887989. The reversal of 7887965 is 5697887.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7887965 - 2¹⁴ = 7871581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12692 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (623808).

Almost surely, 2^7887965 is an apocalyptic number.

It is an amenable number.

7887965 is a deficient number, since it is larger than the sum of its proper divisors (2092963).

7887965 is a wasteful number, since it uses less digits than its factorization.

7887965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its digits is 846720, while the sum is 50.

The square root of 7887965 is about 2808.5521180850. The cubic root of 7887965 is about 199.0619824936.

The spelling of 7887965 in words is "seven million, eight hundred eighty-seven thousand, nine hundred sixty-five".