679649418 has 96 divisors (see below), whose sum is σ = 1796246400. Its totient is φ = 181398528.

The previous prime is 679649413. The next prime is 679649429. The reversal of 679649418 is 814946976.

679649418 is a `hidden beast` number, since 67 + 96 + 494 + 1 + 8 = 666.

679649418 is nontrivially palindromic in base 4.

It is not an unprimeable number, because it can be changed into a prime (679649413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172818 + ... + 176706.

It is an arithmetic number, because the mean of its divisors is an integer number (18710900).

Almost surely, 2^679649418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679649418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898123200).

679649418 is an abundant number, since it is smaller than the sum of its proper divisors (1116596982).

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

679649418 is a wasteful number, since it uses less digits than its factorization.

679649418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996 (or 3993 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 679649418 is about 26070.0866511794. The cubic root of 679649418 is about 879.2147859689.

The spelling of 679649418 in words is "six hundred seventy-nine million, six hundred forty-nine thousand, four hundred eighteen".