679665241 has 8 divisors (see below), whose sum is σ = 696594024. Its totient is φ = 662753280.

The previous prime is 679665227. The next prime is 679665251. The reversal of 679665241 is 142566976.

It can be written as a sum of positive squares in 4 ways, for example, as 108264025 + 571401216 = 10405^2 + 23904^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 679665241 - 2²³ = 671276633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679665191 and 679665200.

It is not an unprimeable number, because it can be changed into a prime (679665211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129321 + ... + 134473.

It is an arithmetic number, because the mean of its divisors is an integer number (87074253).

Almost surely, 2^679665241 is an apocalyptic number.

It is an amenable number.

679665241 is a deficient number, since it is larger than the sum of its proper divisors (16928783).

679665241 is a wasteful number, since it uses less digits than its factorization.

679665241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411.

The product of its digits is 544320, while the sum is 46.

The square root of 679665241 is about 26070.3901198275. The cubic root of 679665241 is about 879.2216089511.

The spelling of 679665241 in words is "six hundred seventy-nine million, six hundred sixty-five thousand, two hundred forty-one".