340667 has 4 divisors (see below), whose sum is σ = 341880. Its totient is φ = 339456.

The previous prime is 340661. The next prime is 340687. The reversal of 340667 is 766043.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 766043 = 773 ⋅991.

It is a cyclic number.

It is not a de Polignac number, because 340667 - 2¹² = 336571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340661) 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, 59 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (85470).

2³⁴⁰⁶⁶⁷ is an apocalyptic number.

340667 is a deficient number, since it is larger than the sum of its proper divisors (1213).

340667 is an equidigital number, since it uses as much as digits as its factorization.

340667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 340667 is about 583.6668570340. Note that the first 3 decimals coincide. The cubic root of 340667 is about 69.8409313216.

The spelling of 340667 in words is "three hundred forty thousand, six hundred sixty-seven".