340663 has 8 divisors (see below), whose sum is σ = 373680. Its totient is φ = 309120.

The previous prime is 340661. The next prime is 340687. The reversal of 340663 is 366043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340663 - 2¹ = 340661 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 148 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (46710).

2³⁴⁰⁶⁶³ is an apocalyptic number.

340663 is a deficient number, since it is larger than the sum of its proper divisors (33017).

340663 is a wasteful number, since it uses less digits than its factorization.

340663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 340663 is about 583.6634304117. The cubic root of 340663 is about 69.8406579708.

The spelling of 340663 in words is "three hundred forty thousand, six hundred sixty-three".