1066166651 has 8 divisors (see below), whose sum is σ = 1172250624. Its totient is φ = 961609320.

The previous prime is 1066166609. The next prime is 1066166653. The reversal of 1066166651 is 1566616601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066166651 - 2¹⁸ = 1065904507 is a prime.

It is a super-2 number, since 2×1066166651² = 2273422655409111602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066166653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380195 + ... + 382988.

It is an arithmetic number, because the mean of its divisors is an integer number (146531328).

Almost surely, 2^1066166651 is an apocalyptic number.

1066166651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1066166651 is a deficient number, since it is larger than the sum of its proper divisors (106083973).

1066166651 is a wasteful number, since it uses less digits than its factorization.

1066166651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763321.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1066166651 is about 32652.2074445205. The cubic root of 1066166651 is about 1021.5862321043.

The spelling of 1066166651 in words is "one billion, sixty-six million, one hundred sixty-six thousand, six hundred fifty-one".