680663932949 has 16 divisors (see below), whose sum is σ = 913898428800. Its totient is φ = 489588442560.

The previous prime is 680663932853. The next prime is 680663932969. The reversal of 680663932949 is 949239366086.

It is not a de Polignac number, because 680663932949 - 2⁸ = 680663932693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680663932969) 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, 339990974 + ... + 339992975.

It is an arithmetic number, because the mean of its divisors is an integer number (57118651800).

Almost surely, 2^680663932949 is an apocalyptic number.

It is an amenable number.

680663932949 is a deficient number, since it is larger than the sum of its proper divisors (233234495851).

680663932949 is a wasteful number, since it uses less digits than its factorization.

680663932949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679983980.

The product of its (nonzero) digits is 90699264, while the sum is 65.

The spelling of 680663932949 in words is "six hundred eighty billion, six hundred sixty-three million, nine hundred thirty-two thousand, nine hundred forty-nine".