1066621017 has 32 divisors (see below), whose sum is σ = 1780982784. Its totient is φ = 551620800.

The previous prime is 1066620979. The next prime is 1066621019. The reversal of 1066621017 is 7101266601.

It is not a de Polignac number, because 1066621017 - 2⁷ = 1066620889 is a prime.

It is a super-2 number, since 2×1066621017² = 2275360787812228578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066621019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42267 + ... + 62607.

It is an arithmetic number, because the mean of its divisors is an integer number (55655712).

Almost surely, 2^1066621017 is an apocalyptic number.

It is an amenable number.

1066621017 is a deficient number, since it is larger than the sum of its proper divisors (714361767).

1066621017 is a wasteful number, since it uses less digits than its factorization.

1066621017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20589.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1066621017 is about 32659.1643646925. The cubic root of 1066621017 is about 1021.7313339126.

Adding to 1066621017 its reverse (7101266601), we get a palindrome (8167887618).

The spelling of 1066621017 in words is "one billion, sixty-six million, six hundred twenty-one thousand, seventeen".