679867 has 2 divisors, whose sum is σ = 679868. Its totient is φ = 679866.

The previous prime is 679859. The next prime is 679879. The reversal of 679867 is 768976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679867 - 2³ = 679859 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 679867.

It is not a weakly prime, because it can be changed into another prime (679807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339933 + 339934.

It is an arithmetic number, because the mean of its divisors is an integer number (339934).

2⁶⁷⁹⁸⁶⁷ is an apocalyptic number.

679867 is a deficient number, since it is larger than the sum of its proper divisors (1).

679867 is an equidigital number, since it uses as much as digits as its factorization.

679867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 679867 is about 824.5404780846. The cubic root of 679867 is about 87.9308599483.

The spelling of 679867 in words is "six hundred seventy-nine thousand, eight hundred sixty-seven".