679405517 has 8 divisors (see below), whose sum is σ = 801510912. Its totient is φ = 563562000.

The previous prime is 679405483. The next prime is 679405537. The reversal of 679405517 is 715504976.

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 679405517 - 2¹⁰ = 679404493 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 (679405537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565234 + ... + 1565667.

It is an arithmetic number, because the mean of its divisors is an integer number (100188864).

Almost surely, 2^679405517 is an apocalyptic number.

It is an amenable number.

679405517 is a deficient number, since it is larger than the sum of its proper divisors (122105395).

679405517 is a wasteful number, since it uses less digits than its factorization.

679405517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130939.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 679405517 is about 26065.4084372373. The cubic root of 679405517 is about 879.1096008462.

The spelling of 679405517 in words is "six hundred seventy-nine million, four hundred five thousand, five hundred seventeen".