1066944820 has 24 divisors (see below), whose sum is σ = 2372383944. Its totient is φ = 401673216.

The previous prime is 1066944817. The next prime is 1066944841. The reversal of 1066944820 is 284496601.

1066944820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101848464 + 965096356 = 10092^2 + 31066^2 .

It is a super-2 number, since 2×1066944820² = 2276742497849664800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568697 + ... + 1569376.

It is an arithmetic number, because the mean of its divisors is an integer number (98849331).

Almost surely, 2^1066944820 is an apocalyptic number.

1066944820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066944820 is an abundant number, since it is smaller than the sum of its proper divisors (1305439124).

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

1066944820 is a wasteful number, since it uses less digits than its factorization.

1066944820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138099 (or 3138097 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1066944820 is about 32664.1212953908. The cubic root of 1066944820 is about 1021.8347152739.

The spelling of 1066944820 in words is "one billion, sixty-six million, nine hundred forty-four thousand, eight hundred twenty".