1066450390 has 32 divisors (see below), whose sum is σ = 1952916480. Its totient is φ = 419209824.

The previous prime is 1066450367. The next prime is 1066450391. The reversal of 1066450390 is 930546601.

It is a super-2 number, since 2×1066450390² = 2274632868662304200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066450391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319269 + ... + 322591.

It is an arithmetic number, because the mean of its divisors is an integer number (61028640).

Almost surely, 2^1066450390 is an apocalyptic number.

1066450390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066450390 is a deficient number, since it is larger than the sum of its proper divisors (886466090).

1066450390 is a wasteful number, since it uses less digits than its factorization.

1066450390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1066450390 is about 32656.5520225268. The cubic root of 1066450390 is about 1021.6768490029.

Adding to 1066450390 its reverse (930546601), we get a palindrome (1996996991).

The spelling of 1066450390 in words is "one billion, sixty-six million, four hundred fifty thousand, three hundred ninety".