2106947 has 4 divisors (see below), whose sum is σ = 2113056. Its totient is φ = 2100840.

The previous prime is 2106943. The next prime is 2106953. The reversal of 2106947 is 7496012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2106947 - 2² = 2106943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2106943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504 + ... + 3237.

It is an arithmetic number, because the mean of its divisors is an integer number (528264).

2^2106947 is an apocalyptic number.

2106947 is a deficient number, since it is larger than the sum of its proper divisors (6109).

2106947 is an equidigital number, since it uses as much as digits as its factorization.

2106947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 2106947 is about 1451.5326382827. The cubic root of 2106947 is about 128.1989703343.

The spelling of 2106947 in words is "two million, one hundred six thousand, nine hundred forty-seven".