679753705 has 8 divisors (see below), whose sum is σ = 816769800. Its totient is φ = 543092736.

The previous prime is 679753703. The next prime is 679753717. The reversal of 679753705 is 507357976.

It can be written as a sum of positive squares in 4 ways, for example, as 3545689 + 676208016 = 1883^2 + 26004^2 .

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 679753705 - 2¹ = 679753703 is a prime.

It is a super-2 number, since 2×679753705² = 924130198922454050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679753703) 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, 84550 + ... + 92239.

It is an arithmetic number, because the mean of its divisors is an integer number (102096225).

Almost surely, 2^679753705 is an apocalyptic number.

It is an amenable number.

679753705 is a deficient number, since it is larger than the sum of its proper divisors (137016095).

679753705 is a wasteful number, since it uses less digits than its factorization.

679753705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177563.

The product of its (nonzero) digits is 1389150, while the sum is 49.

The square root of 679753705 is about 26072.0867020651. The cubic root of 679753705 is about 879.2597532616.

The spelling of 679753705 in words is "six hundred seventy-nine million, seven hundred fifty-three thousand, seven hundred five".