1066208379 has 4 divisors (see below), whose sum is σ = 1421611176. Its totient is φ = 710805584.

The previous prime is 1066208357. The next prime is 1066208399. The reversal of 1066208379 is 9738026601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9738026601 = 3 ⋅3246008867.

It is a cyclic number.

It is not a de Polignac number, because 1066208379 - 2⁷ = 1066208251 is a prime.

It is a super-2 number, since 2×1066208379² = 2273600614899615282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066208379.

It is not an unprimeable number, because it can be changed into a prime (1066208399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177701394 + ... + 177701399.

It is an arithmetic number, because the mean of its divisors is an integer number (355402794).

Almost surely, 2^1066208379 is an apocalyptic number.

1066208379 is a deficient number, since it is larger than the sum of its proper divisors (355402797).

1066208379 is an equidigital number, since it uses as much as digits as its factorization.

1066208379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355402796.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1066208379 is about 32652.8464149758. The cubic root of 1066208379 is about 1021.5995596625.

The spelling of 1066208379 in words is "one billion, sixty-six million, two hundred eight thousand, three hundred seventy-nine".