6938945 has 8 divisors (see below), whose sum is σ = 8967336. Its totient is φ = 5124096.

The previous prime is 6938923. The next prime is 6938951. The reversal of 6938945 is 5498396.

It can be written as a sum of positive squares in 4 ways, for example, as 323761 + 6615184 = 569^2 + 2572^2 .

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-6938945 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6938896 and 6938905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53312 + ... + 53441.

It is an arithmetic number, because the mean of its divisors is an integer number (1120917).

Almost surely, 2^6938945 is an apocalyptic number.

6938945 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6938945 is a deficient number, since it is larger than the sum of its proper divisors (2028391).

6938945 is a wasteful number, since it uses less digits than its factorization.

6938945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106771.

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

The square root of 6938945 is about 2634.1877305917. The cubic root of 6938945 is about 190.7353314530.

The spelling of 6938945 in words is "six million, nine hundred thirty-eight thousand, nine hundred forty-five".