2649491 has 4 divisors (see below), whose sum is σ = 2853312. Its totient is φ = 2445672.

The previous prime is 2649487. The next prime is 2649497. The reversal of 2649491 is 1949462.

2649491 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.

It is a cyclic number.

It is not a de Polignac number, because 2649491 - 2² = 2649487 is a prime.

It is a super-3 number, since 3×2649491³ = 55796711106186233313, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2649497) 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, 101891 + ... + 101916.

It is an arithmetic number, because the mean of its divisors is an integer number (713328).

2^2649491 is an apocalyptic number.

2649491 is a deficient number, since it is larger than the sum of its proper divisors (203821).

2649491 is a wasteful number, since it uses less digits than its factorization.

2649491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203820.

The product of its digits is 15552, while the sum is 35.

The square root of 2649491 is about 1627.7257139948. The cubic root of 2649491 is about 138.3738898198.

The spelling of 2649491 in words is "two million, six hundred forty-nine thousand, four hundred ninety-one".