679997225672 has 12 divisors (see below), whose sum is σ = 1274999171355. Its totient is φ = 339997446648.

The previous prime is 679997225671. The next prime is 679997225707. The reversal of 679997225672 is 276522799976.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 339998612836 + 339998612836 = 583094^2 + 583094^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=583094.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679997225596 and 679997225605.

It is not an unprimeable number, because it can be changed into a prime (679997225671) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2186603 + ... + 2478149.

Almost surely, 2^679997225672 is an apocalyptic number.

It is an amenable number.

679997225672 is a deficient number, since it is larger than the sum of its proper divisors (595001945683).

679997225672 is an frugal number, since it uses more digits than its factorization.

679997225672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583100 (or 291549 counting only the distinct ones).

The product of its digits is 360067680, while the sum is 71.

The spelling of 679997225672 in words is "six hundred seventy-nine billion, nine hundred ninety-seven million, two hundred twenty-five thousand, six hundred seventy-two".