676808409 has 16 divisors (see below), whose sum is σ = 934989120. Its totient is φ = 434965440.

The previous prime is 676808401. The next prime is 676808417. The reversal of 676808409 is 904808676.

676808409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (676808401) and next prime (676808417).

It is not a de Polignac number, because 676808409 - 2³ = 676808401 is a prime.

It is a super-2 number, since 2×676808409² = 916139244986222562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (676808401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53154 + ... + 64644.

It is an arithmetic number, because the mean of its divisors is an integer number (58436820).

Almost surely, 2^676808409 is an apocalyptic number.

It is an amenable number.

676808409 is a deficient number, since it is larger than the sum of its proper divisors (258180711).

676808409 is a wasteful number, since it uses less digits than its factorization.

676808409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12200.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 676808409 is about 26015.5416818486. The cubic root of 676808409 is about 877.9880036516.

The spelling of 676808409 in words is "six hundred seventy-six million, eight hundred eight thousand, four hundred nine".