1203564 has 12 divisors (see below), whose sum is σ = 2808344. Its totient is φ = 401184.

The previous prime is 1203557. The next prime is 1203571. The reversal of 1203564 is 4653021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1203557) and next prime (1203571).

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 1203564.

It is an unprimeable number.

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, 50137 + ... + 50160.

2^1203564 is an apocalyptic number.

It is an amenable number.

1203564 is an abundant number, since it is smaller than the sum of its proper divisors (1604780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203564 is a wasteful number, since it uses less digits than its factorization.

1203564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100304 (or 100302 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1203564 is about 1097.0706449450. The cubic root of 1203564 is about 106.3709561370.

Adding to 1203564 its reverse (4653021), we get a palindrome (5856585).

The spelling of 1203564 in words is "one million, two hundred three thousand, five hundred sixty-four".