2013657 has 4 divisors (see below), whose sum is σ = 2684880. Its totient is φ = 1342436.

The previous prime is 2013653. The next prime is 2013659. The reversal of 2013657 is 7563102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2013657 - 2² = 2013653 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2013653) 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, 335607 + ... + 335612.

It is an arithmetic number, because the mean of its divisors is an integer number (671220).

2^2013657 is an apocalyptic number.

It is an amenable number.

2013657 is a deficient number, since it is larger than the sum of its proper divisors (671223).

2013657 is an equidigital number, since it uses as much as digits as its factorization.

2013657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671222.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 2013657 is about 1419.0338262353. The cubic root of 2013657 is about 126.2782337273.

Adding to 2013657 its reverse (7563102), we get a palindrome (9576759).

The spelling of 2013657 in words is "two million, thirteen thousand, six hundred fifty-seven".