1066321506 has 8 divisors (see below), whose sum is σ = 2132643024. Its totient is φ = 355440500.

The previous prime is 1066321493. The next prime is 1066321507. The reversal of 1066321506 is 6051236601.

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

1066321506 is an admirable number.

It is a super-2 number, since 2×1066321506² = 2274083108316216072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066321507) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 88860120 + ... + 88860131.

It is an arithmetic number, because the mean of its divisors is an integer number (266580378).

Almost surely, 2^1066321506 is an apocalyptic number.

1066321506 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.

1066321506 is a wasteful number, since it uses less digits than its factorization.

1066321506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177720256.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1066321506 is about 32654.5786376122. The cubic root of 1066321506 is about 1021.6356896875.

The spelling of 1066321506 in words is "one billion, sixty-six million, three hundred twenty-one thousand, five hundred six".