679061447 has 4 divisors (see below), whose sum is σ = 719006256. Its totient is φ = 639116640.

The previous prime is 679061441. The next prime is 679061489. The reversal of 679061447 is 744160976.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 679061447 - 2⁸ = 679061191 is a prime.

It is a super-2 number, since 2×679061447² = 922248897603467618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 679061398 and 679061407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679061441) 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 3 ways as a sum of consecutive naturals, for example, 19972379 + ... + 19972412.

It is an arithmetic number, because the mean of its divisors is an integer number (179751564).

Almost surely, 2^679061447 is an apocalyptic number.

679061447 is a deficient number, since it is larger than the sum of its proper divisors (39944809).

679061447 is a wasteful number, since it uses less digits than its factorization.

679061447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39944808.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 679061447 is about 26058.8074746332. The cubic root of 679061447 is about 878.9611738720.

The spelling of 679061447 in words is "six hundred seventy-nine million, sixty-one thousand, four hundred forty-seven".