679387 has 4 divisors (see below), whose sum is σ = 683136. Its totient is φ = 675640.

The previous prime is 679381. The next prime is 679403. The reversal of 679387 is 783976.

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 679387 - 2¹⁵ = 646619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588 + ... + 1969.

It is an arithmetic number, because the mean of its divisors is an integer number (170784).

2⁶⁷⁹³⁸⁷ is an apocalyptic number.

679387 is a deficient number, since it is larger than the sum of its proper divisors (3749).

679387 is a wasteful number, since it uses less digits than its factorization.

679387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748.

The product of its digits is 63504, while the sum is 40.

The square root of 679387 is about 824.2493554744. The cubic root of 679387 is about 87.9101614148.

The spelling of 679387 in words is "six hundred seventy-nine thousand, three hundred eighty-seven".