679271791 has 8 divisors (see below), whose sum is σ = 741254400. Its totient is φ = 617327640.

The previous prime is 679271773. The next prime is 679271821. The reversal of 679271791 is 197172976.

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 679271791 - 2¹⁵ = 679239023 is a prime.

It is a super-2 number, since 2×679271791² = 922820332096695362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679271741) 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, 37300 + ... + 52438.

It is an arithmetic number, because the mean of its divisors is an integer number (92656800).

Almost surely, 2^679271791 is an apocalyptic number.

679271791 is a deficient number, since it is larger than the sum of its proper divisors (61982609).

679271791 is a wasteful number, since it uses less digits than its factorization.

679271791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19229.

The product of its digits is 333396, while the sum is 49.

The square root of 679271791 is about 26062.8431104513. The cubic root of 679271791 is about 879.0519192793.

The spelling of 679271791 in words is "six hundred seventy-nine million, two hundred seventy-one thousand, seven hundred ninety-one".