679469868 has 324 divisors, whose sum is σ = 2324066472. Its totient is φ = 165473280.

The previous prime is 679469863. The next prime is 679469891. The reversal of 679469868 is 868964976.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (679469863) by changing a digit.

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 in 107 ways as a sum of consecutive naturals, for example, 7004796 + ... + 7004892.

Almost surely, 2^679469868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679469868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162033236).

679469868 is an abundant number, since it is smaller than the sum of its proper divisors (1644596604).

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

679469868 is a wasteful number, since it uses less digits than its factorization.

679469868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 139 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The square root of 679469868 is about 26066.6428218135. The cubic root of 679469868 is about 879.1373554024.

The spelling of 679469868 in words is "six hundred seventy-nine million, four hundred sixty-nine thousand, eight hundred sixty-eight".