2456891 has 8 divisors (see below), whose sum is σ = 2662704. Its totient is φ = 2257920.

The previous prime is 2456879. The next prime is 2456917. The reversal of 2456891 is 1986542.

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-2456891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2456801) 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, 950 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (332838).

2^2456891 is an apocalyptic number.

2456891 is a deficient number, since it is larger than the sum of its proper divisors (205813).

2456891 is a wasteful number, since it uses less digits than its factorization.

2456891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421.

The product of its digits is 17280, while the sum is 35.

The square root of 2456891 is about 1567.4472877899. The cubic root of 2456891 is about 134.9362479050.

The spelling of 2456891 in words is "two million, four hundred fifty-six thousand, eight hundred ninety-one".