6661107 has 6 divisors (see below), whose sum is σ = 9621612. Its totient is φ = 4440732.

The previous prime is 6661103. The next prime is 6661111. The reversal of 6661107 is 7011666.

6661107 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6661103) and next prime (6661111).

It is not a de Polignac number, because 6661107 - 2² = 6661103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6661103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370053 + ... + 370070.

It is an arithmetic number, because the mean of its divisors is an integer number (1603602).

Almost surely, 2^6661107 is an apocalyptic number.

6661107 is a deficient number, since it is larger than the sum of its proper divisors (2960505).

6661107 is a wasteful number, since it uses less digits than its factorization.

6661107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740129 (or 740126 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 6661107 is about 2580.9120480946. The cubic root of 6661107 is about 188.1548727594.

The spelling of 6661107 in words is "six million, six hundred sixty-one thousand, one hundred seven".