2648791 has 4 divisors (see below), whose sum is σ = 2682400. Its totient is φ = 2615184.

The previous prime is 2648761. The next prime is 2648801. The reversal of 2648791 is 1978462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1978462 = 2 ⋅989231.

It is a cyclic number.

It is not a de Polignac number, because 2648791 - 2⁹ = 2648279 is a prime.

It is a super-3 number, since 3×2648791³ = 55752498033290333013, which contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2648791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2648731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16686 + ... + 16843.

It is an arithmetic number, because the mean of its divisors is an integer number (670600).

2^2648791 is an apocalyptic number.

2648791 is a deficient number, since it is larger than the sum of its proper divisors (33609).

2648791 is an equidigital number, since it uses as much as digits as its factorization.

2648791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33608.

The product of its digits is 24192, while the sum is 37.

The square root of 2648791 is about 1627.5106758482. The cubic root of 2648791 is about 138.3617025412.

The spelling of 2648791 in words is "two million, six hundred forty-eight thousand, seven hundred ninety-one".