7887265 has 4 divisors (see below), whose sum is σ = 9464724. Its totient is φ = 6309808.

The previous prime is 7887263. The next prime is 7887311. The reversal of 7887265 is 5627887.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2972176 + 4915089 = 1724^2 + 2217^2 .

It is a cyclic number.

It is not a de Polignac number, because 7887265 - 2¹ = 7887263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7887263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788722 + ... + 788731.

It is an arithmetic number, because the mean of its divisors is an integer number (2366181).

Almost surely, 2^7887265 is an apocalyptic number.

It is an amenable number.

7887265 is a deficient number, since it is larger than the sum of its proper divisors (1577459).

7887265 is a wasteful number, since it uses less digits than its factorization.

7887265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577458.

The product of its digits is 188160, while the sum is 43.

The square root of 7887265 is about 2808.4274959486. The cubic root of 7887265 is about 199.0560938810.

The spelling of 7887265 in words is "seven million, eight hundred eighty-seven thousand, two hundred sixty-five".