7678988 has 12 divisors (see below), whose sum is σ = 13471920. Its totient is φ = 3829872.

The previous prime is 7678967. The next prime is 7678999. The reversal of 7678988 is 8898767.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431 + ... + 3942.

It is an arithmetic number, because the mean of its divisors is an integer number (1122660).

Almost surely, 2^7678988 is an apocalyptic number.

It is an amenable number.

7678988 is a deficient number, since it is larger than the sum of its proper divisors (5792932).

7678988 is a wasteful number, since it uses less digits than its factorization.

7678988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816 (or 4814 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 53.

The square root of 7678988 is about 2771.0986990723. The cubic root of 7678988 is about 197.2882995706.

Subtracting from 7678988 its product of digits (1354752), we obtain a palindrome (6324236).

The spelling of 7678988 in words is "seven million, six hundred seventy-eight thousand, nine hundred eighty-eight".