6840345 has 8 divisors (see below), whose sum is σ = 10944576. Its totient is φ = 3648176.

The previous prime is 6840331. The next prime is 6840349. The reversal of 6840345 is 5430486.

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 6840345 - 2⁵ = 6840313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6840349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227997 + ... + 228026.

It is an arithmetic number, because the mean of its divisors is an integer number (1368072).

Almost surely, 2^6840345 is an apocalyptic number.

It is an amenable number.

6840345 is a deficient number, since it is larger than the sum of its proper divisors (4104231).

6840345 is a wasteful number, since it uses less digits than its factorization.

6840345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456031.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 6840345 is about 2615.4053223162. The cubic root of 6840345 is about 189.8275905990.

The spelling of 6840345 in words is "six million, eight hundred forty thousand, three hundred forty-five".