6945609 has 16 divisors (see below), whose sum is σ = 10543104. Its totient is φ = 4026000.

The previous prime is 6945607. The next prime is 6945611. The reversal of 6945609 is 9065496.

It is an interprime number because it is at equal distance from previous prime (6945607) and next prime (6945611).

It is not a de Polignac number, because 6945609 - 2¹ = 6945607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6945607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3817 + ... + 5334.

It is an arithmetic number, because the mean of its divisors is an integer number (658944).

Almost surely, 2^6945609 is an apocalyptic number.

6945609 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

6945609 is a deficient number, since it is larger than the sum of its proper divisors (3597495).

6945609 is a wasteful number, since it uses less digits than its factorization.

6945609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9188.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 6945609 is about 2635.4523330920. The cubic root of 6945609 is about 190.7963711628.

The spelling of 6945609 in words is "six million, nine hundred forty-five thousand, six hundred nine".