679571 has 4 divisors (see below), whose sum is σ = 684600. Its totient is φ = 674544.

The previous prime is 679561. The next prime is 679597. The reversal of 679571 is 175976.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679501) 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 3 ways as a sum of consecutive naturals, for example, 2306 + ... + 2583.

It is an arithmetic number, because the mean of its divisors is an integer number (171150).

2⁶⁷⁹⁵⁷¹ is an apocalyptic number.

679571 is a deficient number, since it is larger than the sum of its proper divisors (5029).

679571 is a wasteful number, since it uses less digits than its factorization.

679571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028.

The product of its digits is 13230, while the sum is 35.

The square root of 679571 is about 824.3609646265. The cubic root of 679571 is about 87.9180970046.

The spelling of 679571 in words is "six hundred seventy-nine thousand, five hundred seventy-one".