2013635 has 12 divisors (see below), whose sum is σ = 2617632. Its totient is φ = 1486368.

The previous prime is 2013619. The next prime is 2013653. The reversal of 2013635 is 5363102.

It is not a de Polignac number, because 2013635 - 2⁴ = 2013619 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 347 + ... + 2036.

It is an arithmetic number, because the mean of its divisors is an integer number (218136).

2^2013635 is an apocalyptic number.

2013635 is a deficient number, since it is larger than the sum of its proper divisors (603997).

2013635 is a wasteful number, since it uses less digits than its factorization.

2013635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414 (or 2401 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 2013635 is about 1419.0260744609. The cubic root of 2013635 is about 126.2777738458.

Adding to 2013635 its reverse (5363102), we get a palindrome (7376737).

The spelling of 2013635 in words is "two million, thirteen thousand, six hundred thirty-five".