2156674 has 16 divisors (see below), whose sum is σ = 3520440. Its totient is φ = 984960.

The previous prime is 2156669. The next prime is 2156681. The reversal of 2156674 is 4766512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 931225 + 1225449 = 965^2 + 1107^2 .

It is a zygodrome in base 12.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2454 + ... + 3214.

2^2156674 is an apocalyptic number.

2156674 is a deficient number, since it is larger than the sum of its proper divisors (1363766).

2156674 is a wasteful number, since it uses less digits than its factorization.

2156674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885.

The product of its digits is 10080, while the sum is 31.

The square root of 2156674 is about 1468.5618815699. The cubic root of 2156674 is about 129.1996987088.

It can be divided in two parts, 215 and 6674, that added together give a square (6889 = 83²).

The spelling of 2156674 in words is "two million, one hundred fifty-six thousand, six hundred seventy-four".