8678431808 has 14 divisors (see below), whose sum is σ = 17221263246. Its totient is φ = 4339215872.

The previous prime is 8678431799. The next prime is 8678431831. The reversal of 8678431808 is 8081348768.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8672824384 + 5607424 = 93128^2 + 2368^2 .

It is a super-2 number, since 2×8678431808² (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 8678431808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67800185 + ... + 67800312.

Almost surely, 2^8678431808 is an apocalyptic number.

It is an amenable number.

8678431808 is a deficient number, since it is larger than the sum of its proper divisors (8542831438).

8678431808 is a wasteful number, since it uses less digits than its factorization.

8678431808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135600509 (or 135600499 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The square root of 8678431808 is about 93158.1011399438. The cubic root of 8678431808 is about 2055.0091113588.

The spelling of 8678431808 in words is "eight billion, six hundred seventy-eight million, four hundred thirty-one thousand, eight hundred eight".