666290126 has 16 divisors (see below), whose sum is σ = 1014200784. Its totient is φ = 328233024.

The previous prime is 666290113. The next prime is 666290153. The reversal of 666290126 is 621092666.

It is a self number, because there is not a number n which added to its sum of digits gives 666290126.

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, 185540 + ... + 189096.

It is an arithmetic number, because the mean of its divisors is an integer number (63387549).

Almost surely, 2^666290126 is an apocalyptic number.

666290126 is a deficient number, since it is larger than the sum of its proper divisors (347910658).

666290126 is a wasteful number, since it uses less digits than its factorization.

666290126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 666290126 is about 25812.5962661643. The cubic root of 666290126 is about 873.4159644766.

The spelling of 666290126 in words is "six hundred sixty-six million, two hundred ninety thousand, one hundred twenty-six".