679702986 has 48 divisors (see below), whose sum is σ = 1529573760. Its totient is φ = 217879200.

The previous prime is 679702981. The next prime is 679702997. The reversal of 679702986 is 689207976.

It is a super-2 number, since 2×679702986² = 923992298354632392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679702981) 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 23 ways as a sum of consecutive naturals, for example, 134811 + ... + 139761.

It is an arithmetic number, because the mean of its divisors is an integer number (31866120).

Almost surely, 2^679702986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679702986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764786880).

679702986 is an abundant number, since it is smaller than the sum of its proper divisors (849870774).

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

679702986 is a wasteful number, since it uses less digits than its factorization.

679702986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5251 (or 5248 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 679702986 is about 26071.1140153235. The cubic root of 679702986 is about 879.2378844169.

The spelling of 679702986 in words is "six hundred seventy-nine million, seven hundred two thousand, nine hundred eighty-six".