1013653 has 4 divisors (see below), whose sum is σ = 1016428. Its totient is φ = 1010880.

The previous prime is 1013641. The next prime is 1013671. The reversal of 1013653 is 3563101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 651249 = 602^2 + 807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1013653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013603) 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, 738 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (254107).

2^1013653 is an apocalyptic number.

It is an amenable number.

1013653 is a deficient number, since it is larger than the sum of its proper divisors (2775).

1013653 is an equidigital number, since it uses as much as digits as its factorization.

1013653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1013653 is about 1006.8033571656. The cubic root of 1013653 is about 100.4530444081.

Adding to 1013653 its reverse (3563101), we get a palindrome (4576754).

The spelling of 1013653 in words is "one million, thirteen thousand, six hundred fifty-three".