1066666650 has 192 divisors, whose sum is σ = 3215032320. Its totient is φ = 228614400.

The previous prime is 1066666637. The next prime is 1066666681. The reversal of 1066666650 is 566666601.

1066666650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1066666650² = 2275555484444445000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2533440 + ... + 2533860.

It is an arithmetic number, because the mean of its divisors is an integer number (16744960).

Almost surely, 2^1066666650 is an apocalyptic number.

1066666650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1066666650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607516160).

1066666650 is an abundant number, since it is smaller than the sum of its proper divisors (2148365670).

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

1066666650 is a wasteful number, since it uses less digits than its factorization.

1066666650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 1066666650 is about 32659.8629819539. The cubic root of 1066666650 is about 1021.7459045365.

The spelling of 1066666650 in words is "one billion, sixty-six million, six hundred sixty-six thousand, six hundred fifty".