1166603 has 2 divisors, whose sum is σ = 1166604. Its totient is φ = 1166602.

The previous prime is 1166597. The next prime is 1166609. The reversal of 1166603 is 3066611.

It is a balanced prime because it is at equal distance from previous prime (1166597) and next prime (1166609).

It is an emirp because it is prime and its reverse (3066611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166603 - 2¹⁰ = 1165579 is a prime.

It is a Sophie Germain prime.

It is equal to p₉₀₅₂₇ and since 1166603 and 90527 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1166609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583301 + 583302.

It is an arithmetic number, because the mean of its divisors is an integer number (583302).

2^1166603 is an apocalyptic number.

1166603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166603 is an equidigital number, since it uses as much as digits as its factorization.

1166603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1166603 is about 1080.0939773927. The cubic root of 1166603 is about 105.2707449663.

The spelling of 1166603 in words is "one million, one hundred sixty-six thousand, six hundred three".