666122262 has 32 divisors (see below), whose sum is σ = 1437875712. Its totient is φ = 204510624.

The previous prime is 666122221. The next prime is 666122263. The reversal of 666122262 is 262221666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666122263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27283 + ... + 45569.

It is an arithmetic number, because the mean of its divisors is an integer number (44933616).

Almost surely, 2^666122262 is an apocalyptic number.

666122262 is an abundant number, since it is smaller than the sum of its proper divisors (771753450).

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

666122262 is a wasteful number, since it uses less digits than its factorization.

666122262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18772.

The product of its digits is 20736, while the sum is 33.

The square root of 666122262 is about 25809.3444705595. The cubic root of 666122262 is about 873.3426093389.

The spelling of 666122262 in words is "six hundred sixty-six million, one hundred twenty-two thousand, two hundred sixty-two".