679670921876 has 6 divisors (see below), whose sum is σ = 1189424113290. Its totient is φ = 339835460936.

The previous prime is 679670921873. The next prime is 679670921879. The reversal of 679670921876 is 678129076976.

It is an interprime number because it is at equal distance from previous prime (679670921873) and next prime (679670921879).

It can be written as a sum of positive squares in only one way, i.e., 646882404100 + 32788517776 = 804290^2 + 181076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679670921873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84958865231 + ... + 84958865238.

It is an arithmetic number, because the mean of its divisors is an integer number (198237352215).

Almost surely, 2^679670921876 is an apocalyptic number.

It is an amenable number.

679670921876 is a deficient number, since it is larger than the sum of its proper divisors (509753191414).

679670921876 is a wasteful number, since it uses less digits than its factorization.

679670921876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169917730473 (or 169917730471 counting only the distinct ones).

The product of its (nonzero) digits is 96018048, while the sum is 68.

The spelling of 679670921876 in words is "six hundred seventy-nine billion, six hundred seventy million, nine hundred twenty-one thousand, eight hundred seventy-six".