2166674 has 4 divisors (see below), whose sum is σ = 3250014. Its totient is φ = 1083336.

The previous prime is 2166673. The next prime is 2166679. The reversal of 2166674 is 4766612.

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

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 20449 = 1465^2 + 143^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2166674.

It is not an unprimeable number, because it can be changed into a prime (2166673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541667 + ... + 541670.

2^2166674 is an apocalyptic number.

2166674 is a deficient number, since it is larger than the sum of its proper divisors (1083340).

2166674 is a wasteful number, since it uses less digits than its factorization.

2166674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083339.

The product of its digits is 12096, while the sum is 32.

The square root of 2166674 is about 1471.9626353953. The cubic root of 2166674 is about 129.3990805993.

It can be divided in two parts, 216667 and 4, that multiplied together give a palindrome (866668).

The spelling of 2166674 in words is "two million, one hundred sixty-six thousand, six hundred seventy-four".