676993961 has 16 divisors (see below), whose sum is σ = 784816128. Its totient is φ = 572006400.

The previous prime is 676993913. The next prime is 676993973. The reversal of 676993961 is 169399676.

It is not a de Polignac number, because 676993961 - 2¹⁰ = 676992937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 676993897 and 676993906.

It is not an unprimeable number, because it can be changed into a prime (676993901) 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, 148841 + ... + 153321.

It is an arithmetic number, because the mean of its divisors is an integer number (49051008).

Almost surely, 2^676993961 is an apocalyptic number.

It is an amenable number.

676993961 is a deficient number, since it is larger than the sum of its proper divisors (107822167).

676993961 is a wasteful number, since it uses less digits than its factorization.

676993961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792.

The product of its digits is 3306744, while the sum is 56.

The square root of 676993961 is about 26019.1076134444. The cubic root of 676993961 is about 878.0682319419.

The spelling of 676993961 in words is "six hundred seventy-six million, nine hundred ninety-three thousand, nine hundred sixty-one".