1066315585 has 4 divisors (see below), whose sum is σ = 1279578708. Its totient is φ = 853052464.

The previous prime is 1066315553. The next prime is 1066315597. The reversal of 1066315585 is 5855136601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 684816561 + 381499024 = 26169^2 + 19532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066315585 - 2⁵ = 1066315553 is a prime.

It is a super-2 number, since 2×1066315585² = 2274057853627784450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106631554 + ... + 106631563.

It is an arithmetic number, because the mean of its divisors is an integer number (319894677).

Almost surely, 2^1066315585 is an apocalyptic number.

It is an amenable number.

1066315585 is a deficient number, since it is larger than the sum of its proper divisors (213263123).

1066315585 is an equidigital number, since it uses as much as digits as its factorization.

1066315585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213263122.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 1066315585 is about 32654.4879763870. The cubic root of 1066315585 is about 1021.6337987268.

The spelling of 1066315585 in words is "one billion, sixty-six million, three hundred fifteen thousand, five hundred eighty-five".