1090785666 has 8 divisors (see below), whose sum is σ = 2181571344. Its totient is φ = 363595220.

The previous prime is 1090785659. The next prime is 1090785667. The reversal of 1090785666 is 6665870901.

It is a sphenic number, since it is the product of 3 distinct primes.

1090785666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1090785667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90898800 + ... + 90898811.

It is an arithmetic number, because the mean of its divisors is an integer number (272696418).

Almost surely, 2^1090785666 is an apocalyptic number.

1090785666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1090785666 is a wasteful number, since it uses less digits than its factorization.

1090785666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181797616.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1090785666 is about 33027.0444635907. The cubic root of 1090785666 is about 1029.3896739274.

The spelling of 1090785666 in words is "one billion, ninety million, seven hundred eighty-five thousand, six hundred sixty-six".