676906044049 has 3 divisors (see below), whose sum is σ = 676906866793. Its totient is φ = 676905221306.

The previous prime is 676906044011. The next prime is 676906044097. The reversal of 676906044049 is 940440609676.

It is a happy number.

The square root of 676906044049 is 822743.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 676906044049 - 2²⁷ = 676771826321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676906047049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 411372 + ... + 1234114.

Almost surely, 2^676906044049 is an apocalyptic number.

676906044049 is the 822743-rd square number.

676906044049 is the 411372-nd centered octagonal number.

It is an amenable number.

676906044049 is a deficient number, since it is larger than the sum of its proper divisors (822744).

676906044049 is an frugal number, since it uses more digits than its factorization.

676906044049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645486 (or 822743 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 676906044049 in words is "six hundred seventy-six billion, nine hundred six million, forty-four thousand, forty-nine".