7688631285 has 12 divisors (see below), whose sum is σ = 13326960972. Its totient is φ = 4100603328.

The previous prime is 7688631281. The next prime is 7688631289. The reversal of 7688631285 is 5821368867.

It is an interprime number because it is at equal distance from previous prime (7688631281) and next prime (7688631289).

It can be written as a sum of positive squares in 2 ways, for example, as 6010745841 + 1677885444 = 77529^2 + 40962^2 .

It is not a de Polignac number, because 7688631285 - 2² = 7688631281 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7688631281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85429192 + ... + 85429281.

It is an arithmetic number, because the mean of its divisors is an integer number (1110580081).

Almost surely, 2^7688631285 is an apocalyptic number.

It is an amenable number.

7688631285 is a deficient number, since it is larger than the sum of its proper divisors (5638329687).

7688631285 is a wasteful number, since it uses less digits than its factorization.

7688631285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170858484 (or 170858481 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 7688631285 is about 87684.8406795610. The cubic root of 7688631285 is about 1973.7085000840.

The spelling of 7688631285 in words is "seven billion, six hundred eighty-eight million, six hundred thirty-one thousand, two hundred eighty-five".