679358069 has 24 divisors (see below), whose sum is σ = 767073048. Its totient is φ = 597749760.

The previous prime is 679358059. The next prime is 679358077. The reversal of 679358069 is 960853976.

It can be written as a sum of positive squares in 4 ways, for example, as 47087044 + 632271025 = 6862^2 + 25145^2 .

It is not a de Polignac number, because 679358069 - 2¹² = 679353973 is a prime.

It is a super-2 number, since 2×679358069² = 923054771830817522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 679358069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679358059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1177109 + ... + 1177685.

It is an arithmetic number, because the mean of its divisors is an integer number (31961377).

Almost surely, 2^679358069 is an apocalyptic number.

It is an amenable number.

679358069 is a deficient number, since it is larger than the sum of its proper divisors (87714979).

679358069 is a wasteful number, since it uses less digits than its factorization.

679358069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 53.

The square root of 679358069 is about 26064.4982495347. The cubic root of 679358069 is about 879.0891354234.

The spelling of 679358069 in words is "six hundred seventy-nine million, three hundred fifty-eight thousand, sixty-nine".