1066168655 has 16 divisors (see below), whose sum is σ = 1300769280. Its totient is φ = 838735392.

The previous prime is 1066168643. The next prime is 1066168721. The reversal of 1066168655 is 5568616601.

It is a cyclic number.

It is not a de Polignac number, because 1066168655 - 2⁴ = 1066168639 is a prime.

It is a super-2 number, since 2×1066168655² = 2273431201809018050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214286 + ... + 219204.

It is an arithmetic number, because the mean of its divisors is an integer number (81298080).

Almost surely, 2^1066168655 is an apocalyptic number.

1066168655 is a deficient number, since it is larger than the sum of its proper divisors (234600625).

1066168655 is an equidigital number, since it uses as much as digits as its factorization.

1066168655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 1066168655 is about 32652.2381315585. The cubic root of 1066168655 is about 1021.5868721723.

The spelling of 1066168655 in words is "one billion, sixty-six million, one hundred sixty-eight thousand, six hundred fifty-five".