1667224 has 64 divisors (see below), whose sum is σ = 3810240. Its totient is φ = 675840.

The previous prime is 1667213. The next prime is 1667227. The reversal of 1667224 is 4227661.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

Its product of digits (4032) is a multiple of the sum of its prime divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1667192 and 1667201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40644 + ... + 40684.

It is an arithmetic number, because the mean of its divisors is an integer number (59535).

2^1667224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1667224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1905120).

1667224 is an abundant number, since it is smaller than the sum of its proper divisors (2143016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1667224 is a wasteful number, since it uses less digits than its factorization.

1667224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 96 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 1667224 is about 1291.2102849652. The cubic root of 1667224 is about 118.5763245115.

It can be divided in two parts, 1667 and 224, that added together give a triangular number (1891 = T₆₁).

The spelling of 1667224 in words is "one million, six hundred sixty-seven thousand, two hundred twenty-four".