676621218 has 64 divisors (see below), whose sum is σ = 1676908800. Its totient is φ = 177230592.

The previous prime is 676621207. The next prime is 676621223. The reversal of 676621218 is 812126676.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 77196 + ... + 85512.

It is an arithmetic number, because the mean of its divisors is an integer number (26201700).

Almost surely, 2^676621218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 676621218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (838454400).

676621218 is an abundant number, since it is smaller than the sum of its proper divisors (1000287582).

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

676621218 is a wasteful number, since it uses less digits than its factorization.

676621218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8491.

The product of its digits is 48384, while the sum is 39.

The square root of 676621218 is about 26011.9437566669. The cubic root of 676621218 is about 877.9070518369.

The spelling of 676621218 in words is "six hundred seventy-six million, six hundred twenty-one thousand, two hundred eighteen".