676986820 has 12 divisors (see below), whose sum is σ = 1421672364. Its totient is φ = 270794720.

The previous prime is 676986811. The next prime is 676986823. The reversal of 676986820 is 28689676.

It can be written as a sum of positive squares in 2 ways, for example, as 454201344 + 222785476 = 21312^2 + 14926^2 .

It is a super-2 number, since 2×676986820² = 916622308907424800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (676986823) 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 3 ways as a sum of consecutive naturals, for example, 16924651 + ... + 16924690.

It is an arithmetic number, because the mean of its divisors is an integer number (118472697).

Almost surely, 2^676986820 is an apocalyptic number.

It is an amenable number.

676986820 is an abundant number, since it is smaller than the sum of its proper divisors (744685544).

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

676986820 is a wasteful number, since it uses less digits than its factorization.

676986820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33849350 (or 33849348 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 676986820 is about 26018.9703870080. The cubic root of 676986820 is about 878.0651446138.

The spelling of 676986820 in words is "six hundred seventy-six million, nine hundred eighty-six thousand, eight hundred twenty".