7689371805 has 24 divisors (see below), whose sum is σ = 13376382552. Its totient is φ = 4086186624.

The previous prime is 7689371771. The next prime is 7689371821. The reversal of 7689371805 is 5081739867.

7689371805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 275128569 + 7414243236 = 16587^2 + 86106^2 .

It is not a de Polignac number, because 7689371805 - 2¹⁸ = 7689109661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295974 + ... + 320903.

It is an arithmetic number, because the mean of its divisors is an integer number (557349273).

Almost surely, 2^7689371805 is an apocalyptic number.

It is an amenable number.

7689371805 is a deficient number, since it is larger than the sum of its proper divisors (5687010747).

7689371805 is a wasteful number, since it uses less digits than its factorization.

7689371805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617165 (or 617162 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The square root of 7689371805 is about 87689.0632006067. The cubic root of 7689371805 is about 1973.7718630608.

The spelling of 7689371805 in words is "seven billion, six hundred eighty-nine million, three hundred seventy-one thousand, eight hundred five".