6709945 has 16 divisors (see below), whose sum is σ = 9247680. Its totient is φ = 4622400.

The previous prime is 6709921. The next prime is 6709949. The reversal of 6709945 is 5499076.

It is not a de Polignac number, because 6709945 - 2¹³ = 6701753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6709898 and 6709907.

It is not an unprimeable number, because it can be changed into a prime (6709949) 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, 2166 + ... + 4255.

It is an arithmetic number, because the mean of its divisors is an integer number (577980).

Almost surely, 2^6709945 is an apocalyptic number.

It is an amenable number.

6709945 is a deficient number, since it is larger than the sum of its proper divisors (2537735).

6709945 is a wasteful number, since it uses less digits than its factorization.

6709945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 6709945 is about 2590.3561531187. The cubic root of 6709945 is about 188.6135923634.

The spelling of 6709945 in words is "six million, seven hundred nine thousand, nine hundred forty-five".