666001050 has 192 divisors, whose sum is σ = 1976123520. Its totient is φ = 146304000.

The previous prime is 666001031. The next prime is 666001051. The reversal of 666001050 is 50100666.

It is a super-2 number, since 2×666001050² = 887114797202205000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 666001050.

It is not an unprimeable number, because it can be changed into a prime (666001051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1308196 + ... + 1308704.

It is an arithmetic number, because the mean of its divisors is an integer number (10292310).

Almost surely, 2^666001050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666001050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988061760).

666001050 is an abundant number, since it is smaller than the sum of its proper divisors (1310122470).

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

666001050 is a wasteful number, since it uses less digits than its factorization.

666001050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 666001050 is about 25806.9961444566. The cubic root of 666001050 is about 873.2896330651.

The spelling of 666001050 in words is "six hundred sixty-six million, one thousand, fifty".