2456861 has 8 divisors (see below), whose sum is σ = 2700000. Its totient is φ = 2217040.

The previous prime is 2456849. The next prime is 2456869. The reversal of 2456861 is 1686542.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2456861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 2388.

It is an arithmetic number, because the mean of its divisors is an integer number (337500).

2^2456861 is an apocalyptic number.

It is an amenable number.

2456861 is a deficient number, since it is larger than the sum of its proper divisors (243139).

2456861 is a wasteful number, since it uses less digits than its factorization.

2456861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659.

The product of its digits is 11520, while the sum is 32.

The square root of 2456861 is about 1567.4377180609. The cubic root of 2456861 is about 134.9356986873.

The spelling of 2456861 in words is "two million, four hundred fifty-six thousand, eight hundred sixty-one".