6671945 has 32 divisors (see below), whose sum is σ = 9830400. Its totient is φ = 4245696.

The previous prime is 6671921. The next prime is 6671947. The reversal of 6671945 is 5491766.

It is not a de Polignac number, because 6671945 - 2⁶ = 6671881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6671899 and 6671908.

It is not an unprimeable number, because it can be changed into a prime (6671947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52472 + ... + 52598.

It is an arithmetic number, because the mean of its divisors is an integer number (307200).

Almost surely, 2^6671945 is an apocalyptic number.

It is an amenable number.

6671945 is a deficient number, since it is larger than the sum of its proper divisors (3158455).

6671945 is a wasteful number, since it uses less digits than its factorization.

6671945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237.

The product of its digits is 45360, while the sum is 38.

The square root of 6671945 is about 2583.0108400857. The cubic root of 6671945 is about 188.2568636914.

The spelling of 6671945 in words is "six million, six hundred seventy-one thousand, nine hundred forty-five".