679407305 has 8 divisors (see below), whose sum is σ = 823361544. Its totient is φ = 538144000.

The previous prime is 679407299. The next prime is 679407317. The reversal of 679407305 is 503704976.

It can be written as a sum of positive squares in 4 ways, for example, as 433638976 + 245768329 = 20824^2 + 15677^2 .

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

It is not a de Polignac number, because 679407305 - 2⁶ = 679407241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672176 + ... + 673185.

It is an arithmetic number, because the mean of its divisors is an integer number (102920193).

Almost surely, 2^679407305 is an apocalyptic number.

It is an amenable number.

679407305 is a deficient number, since it is larger than the sum of its proper divisors (143954239).

679407305 is a wasteful number, since it uses less digits than its factorization.

679407305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345467.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 679407305 is about 26065.4427355455. The cubic root of 679407305 is about 879.1103720334.

The spelling of 679407305 in words is "six hundred seventy-nine million, four hundred seven thousand, three hundred five".