7689313 has 4 divisors (see below), whose sum is σ = 7729348. Its totient is φ = 7649280.

The previous prime is 7689301. The next prime is 7689323. The reversal of 7689313 is 3139867.

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 2039184 + 5650129 = 1428^2 + 2377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7689313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7689323) 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, 19728 + ... + 20113.

It is an arithmetic number, because the mean of its divisors is an integer number (1932337).

Almost surely, 2^7689313 is an apocalyptic number.

It is an amenable number.

7689313 is a deficient number, since it is larger than the sum of its proper divisors (40035).

7689313 is a wasteful number, since it uses less digits than its factorization.

7689313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40034.

The product of its digits is 27216, while the sum is 37.

The square root of 7689313 is about 2772.9610527377. The cubic root of 7689313 is about 197.3766831529.

The spelling of 7689313 in words is "seven million, six hundred eighty-nine thousand, three hundred thirteen".