2656985 has 8 divisors (see below), whose sum is σ = 3212160. Its totient is φ = 2109744.

The previous prime is 2656961. The next prime is 2656987. The reversal of 2656985 is 5896562.

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 2656985 - 2⁶ = 2656921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2656987) 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, 1217 + ... + 2606.

It is an arithmetic number, because the mean of its divisors is an integer number (401520).

2^2656985 is an apocalyptic number.

It is an amenable number.

2656985 is a deficient number, since it is larger than the sum of its proper divisors (555175).

2656985 is a wasteful number, since it uses less digits than its factorization.

2656985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967.

The product of its digits is 129600, while the sum is 41.

The square root of 2656985 is about 1630.0260734111. The cubic root of 2656985 is about 138.5042290411.

The spelling of 2656985 in words is "two million, six hundred fifty-six thousand, nine hundred eighty-five".