1066641245 has 4 divisors (see below), whose sum is σ = 1279969500. Its totient is φ = 853312992.

The previous prime is 1066641229. The next prime is 1066641253. The reversal of 1066641245 is 5421466601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5421466601 = 233 ⋅23268097.

It can be written as a sum of positive squares in 2 ways, for example, as 694691449 + 371949796 = 26357^2 + 19286^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066641245 - 2⁴ = 1066641229 is a prime.

It is a super-2 number, since 2×1066641245² = 2275447091070300050, 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 3 ways as a sum of consecutive naturals, for example, 106664120 + ... + 106664129.

It is an arithmetic number, because the mean of its divisors is an integer number (319992375).

Almost surely, 2^1066641245 is an apocalyptic number.

It is an amenable number.

1066641245 is a deficient number, since it is larger than the sum of its proper divisors (213328255).

1066641245 is an equidigital number, since it uses as much as digits as its factorization.

1066641245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213328254.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1066641245 is about 32659.4740465917. The cubic root of 1066641245 is about 1021.7377927674.

The spelling of 1066641245 in words is "one billion, sixty-six million, six hundred forty-one thousand, two hundred forty-five".