7965905 has 4 divisors (see below), whose sum is σ = 9559092. Its totient is φ = 6372720.

The previous prime is 7965871. The next prime is 7965907. The reversal of 7965905 is 5095697.

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 5895184 + 2070721 = 2428^2 + 1439^2 .

It is not a de Polignac number, because 7965905 - 2¹⁰ = 7964881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7965907) 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, 796586 + ... + 796595.

It is an arithmetic number, because the mean of its divisors is an integer number (2389773).

Almost surely, 2^7965905 is an apocalyptic number.

It is an amenable number.

7965905 is a deficient number, since it is larger than the sum of its proper divisors (1593187).

7965905 is a wasteful number, since it uses less digits than its factorization.

7965905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593186.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 7965905 is about 2822.3934878043. The cubic root of 7965905 is about 199.7154704065.

The spelling of 7965905 in words is "seven million, nine hundred sixty-five thousand, nine hundred five".