2002657 has 8 divisors (see below), whose sum is σ = 2129600. Its totient is φ = 1877904.

The previous prime is 2002643. The next prime is 2002661. The reversal of 2002657 is 7562002.

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 2002657 - 2¹⁵ = 1969889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002607) 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, 1588 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (266200).

2^2002657 is an apocalyptic number.

It is an amenable number.

2002657 is a deficient number, since it is larger than the sum of its proper divisors (126943).

2002657 is a wasteful number, since it uses less digits than its factorization.

2002657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2002657 is about 1415.1526419436. The cubic root of 2002657 is about 126.0478738043.

Adding to 2002657 its reverse (7562002), we get a palindrome (9564659).

The spelling of 2002657 in words is "two million, two thousand, six hundred fifty-seven".