7678423628 has 6 divisors (see below), whose sum is σ = 13437241356. Its totient is φ = 3839211812.

The previous prime is 7678423603. The next prime is 7678423633. The reversal of 7678423628 is 8263248767.

It is a happy number.

It is a super-2 number, since 2×7678423628² (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 7678423628.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959802950 + ... + 959802957.

It is an arithmetic number, because the mean of its divisors is an integer number (2239540226).

Almost surely, 2^7678423628 is an apocalyptic number.

It is an amenable number.

7678423628 is a deficient number, since it is larger than the sum of its proper divisors (5758817728).

7678423628 is a wasteful number, since it uses less digits than its factorization.

7678423628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919605911 (or 1919605909 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 53.

The square root of 7678423628 is about 87626.6148381871. The cubic root of 7678423628 is about 1972.8346617671.

The spelling of 7678423628 in words is "seven billion, six hundred seventy-eight million, four hundred twenty-three thousand, six hundred twenty-eight".