676894221 has 12 divisors (see below), whose sum is σ = 980824572. Its totient is φ = 449837376.

The previous prime is 676894213. The next prime is 676894237. The reversal of 676894221 is 122498676.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165636900 + 511257321 = 12870^2 + 22611^2 .

It is not a de Polignac number, because 676894221 - 2³ = 676894213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676894201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115776 + ... + 121481.

It is an arithmetic number, because the mean of its divisors is an integer number (81735381).

Almost surely, 2^676894221 is an apocalyptic number.

It is an amenable number.

676894221 is a deficient number, since it is larger than the sum of its proper divisors (303930351).

676894221 is a wasteful number, since it uses less digits than its factorization.

676894221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237580 (or 237577 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 676894221 is about 26017.1908744968. The cubic root of 676894221 is about 878.0251085504.

The spelling of 676894221 in words is "six hundred seventy-six million, eight hundred ninety-four thousand, two hundred twenty-one".