1066055999 has 2 divisors, whose sum is σ = 1066056000. Its totient is φ = 1066055998.

The previous prime is 1066055981. The next prime is 1066056041. The reversal of 1066055999 is 9995506601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1066055999 - 2¹⁶ = 1065990463 is a prime.

It is a super-2 number, since 2×1066055999² = 2272950786007776002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066055099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533027999 + 533028000.

It is an arithmetic number, because the mean of its divisors is an integer number (533028000).

Almost surely, 2^1066055999 is an apocalyptic number.

1066055999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066055999 is an equidigital number, since it uses as much as digits as its factorization.

1066055999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 1066055999 is about 32650.5129975013. The cubic root of 1066055999 is about 1021.5508891397.

The spelling of 1066055999 in words is "one billion, sixty-six million, fifty-five thousand, nine hundred ninety-nine".