7688689489 has 16 divisors (see below), whose sum is σ = 8579390400. Its totient is φ = 6845282496.

The previous prime is 7688689469. The next prime is 7688689493. The reversal of 7688689489 is 9849868867.

It is not a de Polignac number, because 7688689489 - 2¹⁷ = 7688558417 is a prime.

It is a super-2 number, since 2×7688689489² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7688689469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53919 + ... + 135220.

It is an arithmetic number, because the mean of its divisors is an integer number (536211900).

Almost surely, 2^7688689489 is an apocalyptic number.

It is an amenable number.

7688689489 is a deficient number, since it is larger than the sum of its proper divisors (890700911).

7688689489 is a wasteful number, since it uses less digits than its factorization.

7688689489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189264.

The product of its digits is 334430208, while the sum is 73.

The square root of 7688689489 is about 87685.1725721059. The cubic root of 7688689489 is about 1973.7134804866.

It can be divided in two parts, 76886 and 89489, that added together give a cube (166375 = 55³).

The spelling of 7688689489 in words is "seven billion, six hundred eighty-eight million, six hundred eighty-nine thousand, four hundred eighty-nine".