2013656 has 8 divisors (see below), whose sum is σ = 3775620. Its totient is φ = 1006824.

The previous prime is 2013653. The next prime is 2013659. The reversal of 2013656 is 6563102.

It is an interprime number because it is at equal distance from previous prime (2013653) and next prime (2013659).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013653) by changing a digit.

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 as a sum of consecutive naturals, namely, 125846 + ... + 125861.

2^2013656 is an apocalyptic number.

It is an amenable number.

2013656 is a deficient number, since it is larger than the sum of its proper divisors (1761964).

2013656 is a wasteful number, since it uses less digits than its factorization.

2013656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251713 (or 251709 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2013656 is about 1419.0334738828. The cubic root of 2013656 is about 126.2782128237.

Adding to 2013656 its reverse (6563102), we get a palindrome (8576758).

The spelling of 2013656 in words is "two million, thirteen thousand, six hundred fifty-six".