2102657 has 8 divisors (see below), whose sum is σ = 2176416. Its totient is φ = 2030112.

The previous prime is 2102651. The next prime is 2102687. The reversal of 2102657 is 7562012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2102657 - 2⁶ = 2102593 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4373 + ... + 4829.

It is an arithmetic number, because the mean of its divisors is an integer number (272052).

2^2102657 is an apocalyptic number.

It is an amenable number.

2102657 is a deficient number, since it is larger than the sum of its proper divisors (73759).

2102657 is a wasteful number, since it uses less digits than its factorization.

2102657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2102657 is about 1450.0541369204. The cubic root of 2102657 is about 128.1119016552. Note that the first 3 decimals are identical.

Adding to 2102657 its reverse (7562012), we get a palindrome (9664669).

The spelling of 2102657 in words is "two million, one hundred two thousand, six hundred fifty-seven".