1066605617 has 16 divisors (see below), whose sum is σ = 1330515072. Its totient is φ = 830670720.

The previous prime is 1066605607. The next prime is 1066605667. The reversal of 1066605617 is 7165066601.

It is not a de Polignac number, because 1066605617 - 2¹⁰ = 1066604593 is a prime.

It is a super-2 number, since 2×1066605617² = 2275295084431901378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066605607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248663 + ... + 252915.

It is an arithmetic number, because the mean of its divisors is an integer number (83157192).

Almost surely, 2^1066605617 is an apocalyptic number.

It is an amenable number.

1066605617 is a deficient number, since it is larger than the sum of its proper divisors (263909455).

1066605617 is a wasteful number, since it uses less digits than its factorization.

1066605617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1066605617 is about 32658.9285954086. The cubic root of 1066605617 is about 1021.7264165964.

The spelling of 1066605617 in words is "one billion, sixty-six million, six hundred five thousand, six hundred seventeen".