679428775 has 6 divisors (see below), whose sum is σ = 842491712. Its totient is φ = 543543000.

The previous prime is 679428773. The next prime is 679428779. The reversal of 679428775 is 577824976.

It is not a de Polignac number, because 679428775 - 2¹ = 679428773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679428773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13588551 + ... + 13588600.

Almost surely, 2^679428775 is an apocalyptic number.

679428775 is a deficient number, since it is larger than the sum of its proper divisors (163062937).

679428775 is a wasteful number, since it uses less digits than its factorization.

679428775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27177161 (or 27177156 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 55.

The square root of 679428775 is about 26065.8545802742. The cubic root of 679428775 is about 879.1196322129.

The spelling of 679428775 in words is "six hundred seventy-nine million, four hundred twenty-eight thousand, seven hundred seventy-five".