7387865 has 12 divisors (see below), whose sum is σ = 9358884. Its totient is φ = 5597856.

The previous prime is 7387817. The next prime is 7387871. The reversal of 7387865 is 5687837.

7387865 is digitally balanced in base 3, 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 2 ways, for example, as 2859481 + 4528384 = 1691^2 + 2128^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7387865 is a prime.

It is a Duffinian number.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 242 + ... + 3851.

It is an arithmetic number, because the mean of its divisors is an integer number (779907).

Almost surely, 2^7387865 is an apocalyptic number.

It is an amenable number.

7387865 is a deficient number, since it is larger than the sum of its proper divisors (1971019).

7387865 is a wasteful number, since it uses less digits than its factorization.

7387865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136 (or 4117 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 7387865 is about 2718.0627292246. The cubic root of 7387865 is about 194.7629378674.

The spelling of 7387865 in words is "seven million, three hundred eighty-seven thousand, eight hundred sixty-five".