1061603 has 4 divisors (see below), whose sum is σ = 1098240. Its totient is φ = 1024968.

The previous prime is 1061597. The next prime is 1061609. The reversal of 1061603 is 3061601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3061601 = 131 ⋅23371.

It is an interprime number because it is at equal distance from previous prime (1061597) and next prime (1061609).

It is a cyclic number.

It is not a de Polignac number, because 1061603 - 2¹⁶ = 996067 is a prime.

It is a super-2 number, since 2×1061603² = 2254001859218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18275 + ... + 18332.

It is an arithmetic number, because the mean of its divisors is an integer number (274560).

2^1061603 is an apocalyptic number.

1061603 is a deficient number, since it is larger than the sum of its proper divisors (36637).

1061603 is an equidigital number, since it uses as much as digits as its factorization.

1061603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36636.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1061603 is about 1030.3412056207. The cubic root of 1061603 is about 102.0126538191.

The spelling of 1061603 in words is "one million, sixty-one thousand, six hundred three".