1066651 has 2 divisors, whose sum is σ = 1066652. Its totient is φ = 1066650.

The previous prime is 1066643. The next prime is 1066669. The reversal of 1066651 is 1566601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1066651 - 2³ = 1066643 is a prime.

It is a super-2 number, since 2×1066651² = 2275488711602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533325 + 533326.

It is an arithmetic number, because the mean of its divisors is an integer number (533326).

2^1066651 is an apocalyptic number.

1066651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066651 is an equidigital number, since it uses as much as digits as its factorization.

1066651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1066651 is about 1032.7879743684. The cubic root of 1066651 is about 102.1740907536.

The spelling of 1066651 in words is "one million, sixty-six thousand, six hundred fifty-one".