6905945 has 8 divisors (see below), whose sum is σ = 8463744. Its totient is φ = 5407024.

The previous prime is 6905923. The next prime is 6905947. The reversal of 6905945 is 5495096.

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 6905945 - 2⁶ = 6905881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6905899 and 6905908.

It is not an unprimeable number, because it can be changed into a prime (6905947) 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, 14459 + ... + 14928.

It is an arithmetic number, because the mean of its divisors is an integer number (1057968).

Almost surely, 2^6905945 is an apocalyptic number.

It is an amenable number.

6905945 is a deficient number, since it is larger than the sum of its proper divisors (1557799).

6905945 is a wasteful number, since it uses less digits than its factorization.

6905945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29439.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 6905945 is about 2627.9164750806. The cubic root of 6905945 is about 190.4324866448.

The spelling of 6905945 in words is "six million, nine hundred five thousand, nine hundred forty-five".