7665413 has 6 divisors (see below), whose sum is σ = 8916966. Its totient is φ = 6570312.

The previous prime is 7665407. The next prime is 7665431. The reversal of 7665413 is 3145667.

It can be written as a sum of positive squares in only one way, i.e., 6315169 + 1350244 = 2513^2 + 1162^2 .

It is not a de Polignac number, because 7665413 - 2⁴ = 7665397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7665413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7665313) 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 5 ways as a sum of consecutive naturals, for example, 78170 + ... + 78267.

It is an arithmetic number, because the mean of its divisors is an integer number (1486161).

Almost surely, 2^7665413 is an apocalyptic number.

It is an amenable number.

7665413 is a deficient number, since it is larger than the sum of its proper divisors (1251553).

7665413 is a wasteful number, since it uses less digits than its factorization.

7665413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156451 (or 156444 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 7665413 is about 2768.6482261205. The cubic root of 7665413 is about 197.1719748502.

It can be divided in two parts, 76654 and 13, that added together give a palindrome (76667).

The spelling of 7665413 in words is "seven million, six hundred sixty-five thousand, four hundred thirteen".