679489647 has 8 divisors (see below), whose sum is σ = 953669760. Its totient is φ = 429151320.

The previous prime is 679489639. The next prime is 679489649. The reversal of 679489647 is 746984976.

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

It is not a de Polignac number, because 679489647 - 2³ = 679489639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679489649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5960379 + ... + 5960492.

It is an arithmetic number, because the mean of its divisors is an integer number (119208720).

Almost surely, 2^679489647 is an apocalyptic number.

679489647 is a deficient number, since it is larger than the sum of its proper divisors (274180113).

679489647 is a wasteful number, since it uses less digits than its factorization.

679489647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11920893.

The product of its digits is 18289152, while the sum is 60.

The square root of 679489647 is about 26067.0222119827. The cubic root of 679489647 is about 879.1458857238.

The spelling of 679489647 in words is "six hundred seventy-nine million, four hundred eighty-nine thousand, six hundred forty-seven".