1066623 has 4 divisors (see below), whose sum is σ = 1422168. Its totient is φ = 711080.

The previous prime is 1066621. The next prime is 1066643. The reversal of 1066623 is 3266601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066623 - 2¹ = 1066621 is a prime.

It is a super-2 number, since 2×1066623² = 2275369248258, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1066593 and 1066602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177768 + ... + 177773.

It is an arithmetic number, because the mean of its divisors is an integer number (355542).

2^1066623 is an apocalyptic number.

1066623 is a deficient number, since it is larger than the sum of its proper divisors (355545).

1066623 is an equidigital number, since it uses as much as digits as its factorization.

1066623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355544.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1066623 is about 1032.7744187382. The cubic root of 1066623 is about 102.1731967093.

The spelling of 1066623 in words is "one million, sixty-six thousand, six hundred twenty-three".