7988755 has 16 divisors (see below), whose sum is σ = 9963360. Its totient is φ = 6144768.

The previous prime is 7988753. The next prime is 7988767. The reversal of 7988755 is 5578897.

It is a cyclic number.

It is not a de Polignac number, because 7988755 - 2¹ = 7988753 is a prime.

Its product of digits (705600) is a multiple of the sum of its prime divisors (630).

It is a junction number, because it is equal to n+sod(n) for n = 7988699 and 7988708.

It is not an unprimeable number, because it can be changed into a prime (7988753) 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 15 ways as a sum of consecutive naturals, for example, 15441 + ... + 15949.

It is an arithmetic number, because the mean of its divisors is an integer number (622710).

Almost surely, 2^7988755 is an apocalyptic number.

7988755 is a deficient number, since it is larger than the sum of its proper divisors (1974605).

7988755 is a wasteful number, since it uses less digits than its factorization.

7988755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630.

The product of its digits is 705600, while the sum is 49.

The square root of 7988755 is about 2826.4385717719. The cubic root of 7988755 is about 199.9062477261.

The spelling of 7988755 in words is "seven million, nine hundred eighty-eight thousand, seven hundred fifty-five".