676726986 has 64 divisors (see below), whose sum is σ = 1495791360. Its totient is φ = 202836480.

The previous prime is 676726979. The next prime is 676726987. The reversal of 676726986 is 689627676.

676726986 = 110² + 111² + ... + 1266².

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (676726987) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 492196 + ... + 493568.

It is an arithmetic number, because the mean of its divisors is an integer number (23371740).

Almost surely, 2^676726986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 676726986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747895680).

676726986 is an abundant number, since it is smaller than the sum of its proper divisors (819064374).

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

676726986 is a wasteful number, since it uses less digits than its factorization.

676726986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551.

The product of its digits is 9144576, while the sum is 57.

The square root of 676726986 is about 26013.9767432817. The cubic root of 676726986 is about 877.9527936457.

The spelling of 676726986 in words is "six hundred seventy-six million, seven hundred twenty-six thousand, nine hundred eighty-six".