7897689765 has 24 divisors (see below), whose sum is σ = 15644947968. Its totient is φ = 3610372320.

The previous prime is 7897689749. The next prime is 7897689769. The reversal of 7897689765 is 5679867987.

7897689765 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7897689765 - 2⁴ = 7897689749 is a prime.

It is a super-3 number, since 3×7897689765³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7897689693 and 7897689702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7897689769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12535701 + ... + 12536330.

It is an arithmetic number, because the mean of its divisors is an integer number (651872832).

Almost surely, 2^7897689765 is an apocalyptic number.

It is an amenable number.

7897689765 is a deficient number, since it is larger than the sum of its proper divisors (7747258203).

7897689765 is a wasteful number, since it uses less digits than its factorization.

7897689765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25072049 (or 25072046 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 72.

The square root of 7897689765 is about 88868.9471356559. The cubic root of 7897689765 is about 1991.4375415495.

The spelling of 7897689765 in words is "seven billion, eight hundred ninety-seven million, six hundred eighty-nine thousand, seven hundred sixty-five".