679123601 has 8 divisors (see below), whose sum is σ = 731993640. Its totient is φ = 626343552.

The previous prime is 679123583. The next prime is 679123607. The reversal of 679123601 is 106321976.

It is a Cunningham number, because it is equal to 26060²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 100480576 + 578643025 = 10024^2 + 24055^2 .

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 679123601 - 2²⁶ = 612014737 is a prime.

It is a super-2 number, since 2×679123601² = 922417730870414402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679123607) 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, 6386 + ... + 37403.

It is an arithmetic number, because the mean of its divisors is an integer number (91499205).

Almost surely, 2^679123601 is an apocalyptic number.

It is an amenable number.

679123601 is a deficient number, since it is larger than the sum of its proper divisors (52870039).

679123601 is a wasteful number, since it uses less digits than its factorization.

679123601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44995.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 679123601 is about 26060.0000191865. Note that the first 4 decimals coincide. The cubic root of 679123601 is about 878.9879899460.

The spelling of 679123601 in words is "six hundred seventy-nine million, one hundred twenty-three thousand, six hundred one".