1065566601 has 12 divisors (see below), whose sum is σ = 1679074800. Its totient is φ = 645797880.

The previous prime is 1065566597. The next prime is 1065566603. The reversal of 1065566601 is 1066655601.

It is not a de Polignac number, because 1065566601 - 2² = 1065566597 is a prime.

It is a super-2 number, since 2×1065566601² = 2270864362333386402, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1065566603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5381551 + ... + 5381748.

It is an arithmetic number, because the mean of its divisors is an integer number (139922900).

Almost surely, 2^1065566601 is an apocalyptic number.

1065566601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1065566601 is a deficient number, since it is larger than the sum of its proper divisors (613508199).

1065566601 is a wasteful number, since it uses less digits than its factorization.

1065566601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10763316 (or 10763313 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1065566601 is about 32643.0176454322. The cubic root of 1065566601 is about 1021.3945429172.

The spelling of 1065566601 in words is "one billion, sixty-five million, five hundred sixty-six thousand, six hundred one".