1666122 has 8 divisors (see below), whose sum is σ = 3332256. Its totient is φ = 555372.

The previous prime is 1666111. The next prime is 1666127. The reversal of 1666122 is 2216661.

It is a sphenic number, since it is the product of 3 distinct primes.

1666122 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1666092 and 1666101.

It is not an unprimeable number, because it can be changed into a prime (1666127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138838 + ... + 138849.

It is an arithmetic number, because the mean of its divisors is an integer number (416532).

2^1666122 is an apocalyptic number.

1666122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1666122 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 1666122 = (6266112)₈.

1666122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277692.

The product of its digits is 864, while the sum is 24.

The square root of 1666122 is about 1290.7834830056. The cubic root of 1666122 is about 118.5501932677.

The spelling of 1666122 in words is "one million, six hundred sixty-six thousand, one hundred twenty-two".