666072022 has 16 divisors (see below), whose sum is σ = 1245641472. Its totient is φ = 259508520.

The previous prime is 666072007. The next prime is 666072031. The reversal of 666072022 is 220270666.

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 7 ways as a sum of consecutive naturals, for example, 2162418 + ... + 2162725.

It is an arithmetic number, because the mean of its divisors is an integer number (77852592).

Almost surely, 2^666072022 is an apocalyptic number.

666072022 is a deficient number, since it is larger than the sum of its proper divisors (579569450).

666072022 is a wasteful number, since it uses less digits than its factorization.

666072022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325163.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 666072022 is about 25808.3711613112. The cubic root of 666072022 is about 873.3206524909.

The spelling of 666072022 in words is "six hundred sixty-six million, seventy-two thousand, twenty-two".