6983945 has 4 divisors (see below), whose sum is σ = 8380740. Its totient is φ = 5587152.

The previous prime is 6983843. The next prime is 6983947. The reversal of 6983945 is 5493896.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4721929 + 2262016 = 2173^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 6983945 - 2¹⁴ = 6967561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6983896 and 6983905.

It is not an unprimeable number, because it can be changed into a prime (6983947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698390 + ... + 698399.

It is an arithmetic number, because the mean of its divisors is an integer number (2095185).

Almost surely, 2^6983945 is an apocalyptic number.

It is an amenable number.

6983945 is a deficient number, since it is larger than the sum of its proper divisors (1396795).

6983945 is a wasteful number, since it uses less digits than its factorization.

6983945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396794.

The product of its digits is 233280, while the sum is 44.

The square root of 6983945 is about 2642.7154595226. The cubic root of 6983945 is about 191.1467581808.

The spelling of 6983945 in words is "six million, nine hundred eighty-three thousand, nine hundred forty-five".