1066071660 has 24 divisors (see below), whose sum is σ = 2985000816. Its totient is φ = 284285760.

The previous prime is 1066071659. The next prime is 1066071661. The reversal of 1066071660 is 661706601.

It is an interprime number because it is at equal distance from previous prime (1066071659) and next prime (1066071661).

It is a super-2 number, since 2×1066071660² = 2273017568510311200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066071661) 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 7 ways as a sum of consecutive naturals, for example, 8883871 + ... + 8883990.

It is an arithmetic number, because the mean of its divisors is an integer number (124375034).

Almost surely, 2^1066071660 is an apocalyptic number.

1066071660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066071660 is an abundant number, since it is smaller than the sum of its proper divisors (1918929156).

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

1066071660 is a wasteful number, since it uses less digits than its factorization.

1066071660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17767873 (or 17767871 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1066071660 is about 32650.7528243990. The cubic root of 1066071660 is about 1021.5558915130. Note that the first 3 decimals are identical.

The spelling of 1066071660 in words is "one billion, sixty-six million, seventy-one thousand, six hundred sixty".