6945638 has 16 divisors (see below), whose sum is σ = 11945760. Its totient is φ = 2966976.

The previous prime is 6945637. The next prime is 6945641. The reversal of 6945638 is 8365496.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 6945595 and 6945604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6945637) 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, 5120 + ... + 6332.

It is an arithmetic number, because the mean of its divisors is an integer number (746610).

Almost surely, 2^6945638 is an apocalyptic number.

6945638 is a deficient number, since it is larger than the sum of its proper divisors (5000122).

6945638 is a wasteful number, since it uses less digits than its factorization.

6945638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its digits is 155520, while the sum is 41.

The square root of 6945638 is about 2635.4578349881. The cubic root of 6945638 is about 190.7966367064.

The spelling of 6945638 in words is "six million, nine hundred forty-five thousand, six hundred thirty-eight".