679571946 has 12 divisors (see below), whose sum is σ = 1472405922. Its totient is φ = 226523976.

The previous prime is 679571929. The next prime is 679571947. The reversal of 679571946 is 649175976.

679571946 is a `hidden beast` number, since 67 + 9 + 571 + 9 + 4 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 384591321 + 294980625 = 19611^2 + 17175^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 679571892 and 679571901.

It is not an unprimeable number, because it can be changed into a prime (679571947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18876981 + ... + 18877016.

Almost surely, 2^679571946 is an apocalyptic number.

679571946 is an abundant number, since it is smaller than the sum of its proper divisors (792833976).

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

679571946 is a wasteful number, since it uses less digits than its factorization.

679571946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37754005 (or 37754002 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 679571946 is about 26068.6007679737. The cubic root of 679571946 is about 879.1813780018.

The spelling of 679571946 in words is "six hundred seventy-nine million, five hundred seventy-one thousand, nine hundred forty-six".