670867 has 2 divisors, whose sum is σ = 670868. Its totient is φ = 670866.

The previous prime is 670853. The next prime is 670877. The reversal of 670867 is 768076.

670867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670867 - 2⁷ = 670739 is a prime.

It is not a weakly prime, because it can be changed into another prime (670877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335433 + 335434.

It is an arithmetic number, because the mean of its divisors is an integer number (335434).

2⁶⁷⁰⁸⁶⁷ is an apocalyptic number.

670867 is a deficient number, since it is larger than the sum of its proper divisors (1).

670867 is an equidigital number, since it uses as much as digits as its factorization.

670867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 670867 is about 819.0647105083. The cubic root of 670867 is about 87.5411289638.

The spelling of 670867 in words is "six hundred seventy thousand, eight hundred sixty-seven".