7887667888 has 40 divisors (see below), whose sum is σ = 16274949408. Its totient is φ = 3690365952.

The previous prime is 7887667883. The next prime is 7887667913. The reversal of 7887667888 is 8887667887.

It is a super-2 number, since 2×7887667888² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7887667888.

It is not an unprimeable number, because it can be changed into a prime (7887667883) 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 7 ways as a sum of consecutive naturals, for example, 36756 + ... + 130867.

Almost surely, 2^7887667888 is an apocalyptic number.

It is an amenable number.

7887667888 is an abundant number, since it is smaller than the sum of its proper divisors (8387281520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7887667888 is a wasteful number, since it uses less digits than its factorization.

7887667888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167821 (or 167815 counting only the distinct ones).

The product of its digits is 404619264, while the sum is 73.

The square root of 7887667888 is about 88812.5435284904. The cubic root of 7887667888 is about 1990.5948313980.

Subtracting 7887667888 from its reverse (8887667887), we obtain a palindrome (999999999).

The spelling of 7887667888 in words is "seven billion, eight hundred eighty-seven million, six hundred sixty-seven thousand, eight hundred eighty-eight".