1066118497 has 4 divisors (see below), whose sum is σ = 1070267076. Its totient is φ = 1061969920.

The previous prime is 1066118477. The next prime is 1066118507. The reversal of 1066118497 is 7948116601.

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 1057615441 + 8503056 = 32521^2 + 2916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066118497 - 2⁷ = 1066118369 is a prime.

It is a super-2 number, since 2×1066118497² = 2273217299291078018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066118477) 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, 2073904 + ... + 2074417.

It is an arithmetic number, because the mean of its divisors is an integer number (267566769).

Almost surely, 2^1066118497 is an apocalyptic number.

It is an amenable number.

1066118497 is a deficient number, since it is larger than the sum of its proper divisors (4148579).

1066118497 is an equidigital number, since it uses as much as digits as its factorization.

1066118497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4148578.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1066118497 is about 32651.4700587891. The cubic root of 1066118497 is about 1021.5708517058.

The spelling of 1066118497 in words is "one billion, sixty-six million, one hundred eighteen thousand, four hundred ninety-seven".