7689641 has 4 divisors (see below), whose sum is σ = 7695300. Its totient is φ = 7683984.

The previous prime is 7689631. The next prime is 7689653. The reversal of 7689641 is 1469867.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 3984016 + 3705625 = 1996^2 + 1925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7689641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7689631) 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 3 ways as a sum of consecutive naturals, for example, 575 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (1923825).

Almost surely, 2^7689641 is an apocalyptic number.

It is an amenable number.

7689641 is a deficient number, since it is larger than the sum of its proper divisors (5659).

7689641 is a wasteful number, since it uses less digits than its factorization.

7689641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658.

The product of its digits is 72576, while the sum is 41.

The square root of 7689641 is about 2773.0201946614. The cubic root of 7689641 is about 197.3794895862.

The spelling of 7689641 in words is "seven million, six hundred eighty-nine thousand, six hundred forty-one".