7685413 has 4 divisors (see below), whose sum is σ = 7691020. Its totient is φ = 7679808.

The previous prime is 7685401. The next prime is 7685423. The reversal of 7685413 is 3145867.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3145867 = 17 ⋅185051.

It can be written as a sum of positive squares in 2 ways, for example, as 4524129 + 3161284 = 2127^2 + 1778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7685413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7685423) 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, 781 + ... + 3997.

It is an arithmetic number, because the mean of its divisors is an integer number (1922755).

Almost surely, 2^7685413 is an apocalyptic number.

It is an amenable number.

7685413 is a deficient number, since it is larger than the sum of its proper divisors (5607).

7685413 is a wasteful number, since it uses less digits than its factorization.

7685413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606.

The product of its digits is 20160, while the sum is 34.

The square root of 7685413 is about 2772.2577441501. The cubic root of 7685413 is about 197.3433078591.

It can be divided in two parts, 76854 and 13, that added together give a palindrome (76867).

The spelling of 7685413 in words is "seven million, six hundred eighty-five thousand, four hundred thirteen".