340416643 has 8 divisors (see below), whose sum is σ = 390317312. Its totient is φ = 290833416.

The previous prime is 340416631. The next prime is 340416679. The reversal of 340416643 is 346614043.

It is a happy number.

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-340416643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340416343) 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, 77055 + ... + 81352.

It is an arithmetic number, because the mean of its divisors is an integer number (48789664).

Almost surely, 2^340416643 is an apocalyptic number.

340416643 is a deficient number, since it is larger than the sum of its proper divisors (49900669).

340416643 is a wasteful number, since it uses less digits than its factorization.

340416643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158721.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 340416643 is about 18450.3832751518. The cubic root of 340416643 is about 698.2381837251.

The spelling of 340416643 in words is "three hundred forty million, four hundred sixteen thousand, six hundred forty-three".