1066565101 has 4 divisors (see below), whose sum is σ = 1218931552. Its totient is φ = 914198652.

The previous prime is 1066565089. The next prime is 1066565107. The reversal of 1066565101 is 1015656601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1066565101 - 2⁹ = 1066564589 is a prime.

It is a super-2 number, since 2×1066565101² = 2275122229342280402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066565107) 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, 76183215 + ... + 76183228.

It is an arithmetic number, because the mean of its divisors is an integer number (304732888).

Almost surely, 2^1066565101 is an apocalyptic number.

It is an amenable number.

1066565101 is a deficient number, since it is larger than the sum of its proper divisors (152366451).

1066565101 is an equidigital number, since it uses as much as digits as its factorization.

1066565101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152366450.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1066565101 is about 32658.3082997267. The cubic root of 1066565101 is about 1021.7134793586.

The spelling of 1066565101 in words is "one billion, sixty-six million, five hundred sixty-five thousand, one hundred one".