1665023222 has 32 divisors (see below), whose sum is σ = 2687772672. Its totient is φ = 771702624.

The previous prime is 1665023183. The next prime is 1665023251. The reversal of 1665023222 is 2223205661.

It is a super-2 number, since 2×1665023222² = 5544604659598522568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218948 + ... + 226424.

It is an arithmetic number, because the mean of its divisors is an integer number (83992896).

Almost surely, 2^1665023222 is an apocalyptic number.

1665023222 is a deficient number, since it is larger than the sum of its proper divisors (1022749450).

1665023222 is a wasteful number, since it uses less digits than its factorization.

1665023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7652.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1665023222 is about 40804.6960777801. The cubic root of 1665023222 is about 1185.2412695131.

Adding to 1665023222 its reverse (2223205661), we get a palindrome (3888228883).

The spelling of 1665023222 in words is "one billion, six hundred sixty-five million, twenty-three thousand, two hundred twenty-two".