1066345020 has 96 divisors (see below), whose sum is σ = 3572735040. Its totient is φ = 262483200.

The previous prime is 1066345019. The next prime is 1066345031. The reversal of 1066345020 is 205436601.

1066345020 is a `hidden beast` number, since 1 + 0 + 6 + 634 + 5 + 0 + 20 = 666.

It is a super-3 number, since 3×1066345020³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 68931 + ... + 82970.

It is an arithmetic number, because the mean of its divisors is an integer number (37215990).

Almost surely, 2^1066345020 is an apocalyptic number.

1066345020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066345020 is an abundant number, since it is smaller than the sum of its proper divisors (2506390020).

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

1066345020 is a wasteful number, since it uses less digits than its factorization.

1066345020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151932 (or 151924 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1066345020 is about 32654.9386770210. The cubic root of 1066345020 is about 1021.6431991691.

The spelling of 1066345020 in words is "one billion, sixty-six million, three hundred forty-five thousand, twenty".