340645663 has 8 divisors (see below), whose sum is σ = 355968000. Its totient is φ = 325366008.

The previous prime is 340645637. The next prime is 340645673. The reversal of 340645663 is 366546043.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340645663 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 (340645603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6238 + ... + 26836.

It is an arithmetic number, because the mean of its divisors is an integer number (44496000).

Almost surely, 2^340645663 is an apocalyptic number.

340645663 is a deficient number, since it is larger than the sum of its proper divisors (15322337).

340645663 is a wasteful number, since it uses less digits than its factorization.

340645663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21341.

The product of its (nonzero) digits is 155520, while the sum is 37.

The square root of 340645663 is about 18456.5886067821. The cubic root of 340645663 is about 698.3947317522.

The spelling of 340645663 in words is "three hundred forty million, six hundred forty-five thousand, six hundred sixty-three".