676679949680 has 80 divisors (see below), whose sum is σ = 1798293991104. Its totient is φ = 231971174400.

The previous prime is 676679949679. The next prime is 676679949689. The reversal of 676679949680 is 86949976676.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676679949689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3978380 + ... + 4144980.

Almost surely, 2^676679949680 is an apocalyptic number.

It is an amenable number.

676679949680 is an abundant number, since it is smaller than the sum of its proper divisors (1121614041424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

676679949680 is a wasteful number, since it uses less digits than its factorization.

676679949680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173874 (or 173868 counting only the distinct ones).

The product of its (nonzero) digits is 1481421312, while the sum is 77.

The spelling of 676679949680 in words is "six hundred seventy-six billion, six hundred seventy-nine million, nine hundred forty-nine thousand, six hundred eighty".