2648921 has 4 divisors (see below), whose sum is σ = 2889744. Its totient is φ = 2408100.

The previous prime is 2648917. The next prime is 2648953. The reversal of 2648921 is 1298462.

2648921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2648921 - 2² = 2648917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2648911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120395 + ... + 120416.

It is an arithmetic number, because the mean of its divisors is an integer number (722436).

2^2648921 is an apocalyptic number.

It is an amenable number.

2648921 is a deficient number, since it is larger than the sum of its proper divisors (240823).

2648921 is a wasteful number, since it uses less digits than its factorization.

2648921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240822.

The product of its digits is 6912, while the sum is 32.

The square root of 2648921 is about 1627.5506136523. The cubic root of 2648921 is about 138.3639660553.

The spelling of 2648921 in words is "two million, six hundred forty-eight thousand, nine hundred twenty-one".