679913447 has 4 divisors (see below), whose sum is σ = 681034176. Its totient is φ = 678792720.

The previous prime is 679913441. The next prime is 679913467. The reversal of 679913447 is 744319976.

It is a happy number.

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 679913447 - 2⁴ = 679913431 is a prime.

It is a super-2 number, since 2×679913447² = 924564590822843618, 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 = 679913395 and 679913404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679913441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559454 + ... + 560667.

It is an arithmetic number, because the mean of its divisors is an integer number (170258544).

Almost surely, 2^679913447 is an apocalyptic number.

679913447 is a deficient number, since it is larger than the sum of its proper divisors (1120729).

679913447 is a wasteful number, since it uses less digits than its factorization.

679913447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120728.

The product of its digits is 1143072, while the sum is 50.

The square root of 679913447 is about 26075.1499899809. The cubic root of 679913447 is about 879.3286231624.

The spelling of 679913447 in words is "six hundred seventy-nine million, nine hundred thirteen thousand, four hundred forty-seven".