1066087249 has 4 divisors (see below), whose sum is σ = 1066192740. Its totient is φ = 1065981760.

The previous prime is 1066087247. The next prime is 1066087271. The reversal of 1066087249 is 9427806601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 136142224 + 929945025 = 11668^2 + 30495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066087249 - 2¹ = 1066087247 is a prime.

It is a super-2 number, since 2×1066087249² = 2273084044960776002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066087247) 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, 35764 + ... + 58405.

It is an arithmetic number, because the mean of its divisors is an integer number (266548185).

Almost surely, 2^1066087249 is an apocalyptic number.

It is an amenable number.

1066087249 is a deficient number, since it is larger than the sum of its proper divisors (105491).

1066087249 is an equidigital number, since it uses as much as digits as its factorization.

1066087249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105490.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1066087249 is about 32650.9915469653. The cubic root of 1066087249 is about 1021.5608708397.

The spelling of 1066087249 in words is "one billion, sixty-six million, eighty-seven thousand, two hundred forty-nine".