676841993 has 8 divisors (see below), whose sum is σ = 680927016. Its totient is φ = 672768000.

The previous prime is 676841989. The next prime is 676842011. The reversal of 676841993 is 399148676.

It can be written as a sum of positive squares in 4 ways, for example, as 480617929 + 196224064 = 21923^2 + 14008^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 676841993 - 2² = 676841989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676841983) 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 7 ways as a sum of consecutive naturals, for example, 142505 + ... + 147177.

It is an arithmetic number, because the mean of its divisors is an integer number (85115877).

Almost surely, 2^676841993 is an apocalyptic number.

It is an amenable number.

676841993 is a deficient number, since it is larger than the sum of its proper divisors (4085023).

676841993 is a wasteful number, since it uses less digits than its factorization.

676841993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5515.

The product of its digits is 1959552, while the sum is 53.

The square root of 676841993 is about 26016.1871341671. The cubic root of 676841993 is about 878.0025256646.

The spelling of 676841993 in words is "six hundred seventy-six million, eight hundred forty-one thousand, nine hundred ninety-three".