676549609 has 4 divisors (see below), whose sum is σ = 684151380. Its totient is φ = 668947840.

The previous prime is 676549607. The next prime is 676549633. The reversal of 676549609 is 906945676.

676549609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147549609 + 529000000 = 12147^2 + 23000^2 .

It is a cyclic number.

It is not a de Polignac number, because 676549609 - 2¹ = 676549607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676549607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800752 + ... + 3800929.

It is an arithmetic number, because the mean of its divisors is an integer number (171037845).

Almost surely, 2^676549609 is an apocalyptic number.

It is an amenable number.

676549609 is a deficient number, since it is larger than the sum of its proper divisors (7601771).

676549609 is an equidigital number, since it uses as much as digits as its factorization.

676549609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7601770.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 676549609 is about 26010.5672564056. The cubic root of 676549609 is about 877.8760801685.

The spelling of 676549609 in words is "six hundred seventy-six million, five hundred forty-nine thousand, six hundred nine".