2166701 has 4 divisors (see below), whose sum is σ = 2294172. Its totient is φ = 2039232.

The previous prime is 2166691. The next prime is 2166709. The reversal of 2166701 is 1076612.

2166701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2033476 + 133225 = 1426^2 + 365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2166701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63710 + ... + 63743.

It is an arithmetic number, because the mean of its divisors is an integer number (573543).

2^2166701 is an apocalyptic number.

It is an amenable number.

2166701 is a deficient number, since it is larger than the sum of its proper divisors (127471).

2166701 is a wasteful number, since it uses less digits than its factorization.

2166701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127470.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2166701 is about 1471.9718067952. The cubic root of 2166701 is about 129.3996180991.

The spelling of 2166701 in words is "two million, one hundred sixty-six thousand, seven hundred one".