1066346550 has 72 divisors (see below), whose sum is σ = 2886946920. Its totient is φ = 282172800.

The previous prime is 1066346531. The next prime is 1066346609. The reversal of 1066346550 is 556436601.

1066346550 is a `hidden beast` number, since 1 + 0 + 6 + 63 + 46 + 550 = 666.

It is a super-2 number, since 2×1066346550² = 2274189929393805000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 49906 + ... + 67994.

It is an arithmetic number, because the mean of its divisors is an integer number (40096485).

Almost surely, 2^1066346550 is an apocalyptic number.

1066346550 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 1066346550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443473460).

1066346550 is an abundant number, since it is smaller than the sum of its proper divisors (1820600370).

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

1066346550 is a wasteful number, since it uses less digits than its factorization.

1066346550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18238 (or 18230 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1066346550 is about 32654.9621037906. The cubic root of 1066346550 is about 1021.6436877893.

The spelling of 1066346550 in words is "one billion, sixty-six million, three hundred forty-six thousand, five hundred fifty".