676427985 has 12 divisors (see below), whose sum is σ = 1172475252. Its totient is φ = 360761568.

The previous prime is 676427981. The next prime is 676428013. The reversal of 676427985 is 589724676.

It can be written as a sum of positive squares in 2 ways, for example, as 468116496 + 208311489 = 21636^2 + 14433^2 .

It is not a de Polignac number, because 676427985 - 2² = 676427981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (676427981) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7515822 + ... + 7515911.

It is an arithmetic number, because the mean of its divisors is an integer number (97706271).

Almost surely, 2^676427985 is an apocalyptic number.

It is an amenable number.

676427985 is a deficient number, since it is larger than the sum of its proper divisors (496047267).

676427985 is a wasteful number, since it uses less digits than its factorization.

676427985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15031744 (or 15031741 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 676427985 is about 26008.2291784735. The cubic root of 676427985 is about 877.8234714622.

The spelling of 676427985 in words is "six hundred seventy-six million, four hundred twenty-seven thousand, nine hundred eighty-five".