7965813 has 8 divisors (see below), whose sum is σ = 10643488. Its totient is φ = 5299344.

The previous prime is 7965803. The next prime is 7965863. The reversal of 7965813 is 3185697.

7965813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7965813 - 2⁵ = 7965781 is a prime.

It is a Duffinian number.

7965813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7965803) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 970 + ... + 4107.

It is an arithmetic number, because the mean of its divisors is an integer number (1330436).

Almost surely, 2^7965813 is an apocalyptic number.

It is an amenable number.

7965813 is a deficient number, since it is larger than the sum of its proper divisors (2677675).

7965813 is a wasteful number, since it uses less digits than its factorization.

7965813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603.

The product of its digits is 45360, while the sum is 39.

The square root of 7965813 is about 2822.3771895337. The cubic root of 7965813 is about 199.7147015508.

It can be divided in two parts, 7965 and 813, that added together give a palindrome (8778).

The spelling of 7965813 in words is "seven million, nine hundred sixty-five thousand, eight hundred thirteen".