2656081 has 8 divisors (see below), whose sum is σ = 2790720. Its totient is φ = 2524368.

The previous prime is 2656079. The next prime is 2656091. The reversal of 2656081 is 1806562.

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 2656081 - 2¹ = 2656079 is a prime.

It is a super-2 number, since 2×2656081² = 14109532557122, which contains 22 as substring.

It is a Duffinian number.

2656081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2656051) 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, 1260 + ... + 2626.

It is an arithmetic number, because the mean of its divisors is an integer number (348840).

2^2656081 is an apocalyptic number.

It is an amenable number.

2656081 is a deficient number, since it is larger than the sum of its proper divisors (134639).

2656081 is a wasteful number, since it uses less digits than its factorization.

2656081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2656081 is about 1629.7487536427. The cubic root of 2656081 is about 138.4885192515.

The spelling of 2656081 in words is "two million, six hundred fifty-six thousand, eighty-one".