666022 has 16 divisors (see below), whose sum is σ = 1154592. Its totient is φ = 282240.

The previous prime is 666019. The next prime is 666023. The reversal of 666022 is 220666.

It is a junction number, because it is equal to n+sod(n) for n = 665984 and 666002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372 + ... + 1792.

It is an arithmetic number, because the mean of its divisors is an integer number (72162).

2⁶⁶⁶⁰²² is an apocalyptic number.

666022 is a deficient number, since it is larger than the sum of its proper divisors (488570).

666022 is a wasteful number, since it uses less digits than its factorization.

666022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 666022 is about 816.1017093476. The cubic root of 666022 is about 87.3298789820.

Adding to 666022 its reverse (220666), we get a palindrome (886688).

The spelling of 666022 in words is "six hundred sixty-six thousand, twenty-two".