5649878 has 16 divisors (see below), whose sum is σ = 9607920. Its totient is φ = 2470176.

The previous prime is 5649877. The next prime is 5649883. The reversal of 5649878 is 8789465.

It is a super-2 number, since 2×5649878² = 63842242829768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649871) 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, 5225 + ... + 6212.

It is an arithmetic number, because the mean of its divisors is an integer number (600495).

Almost surely, 2^5649878 is an apocalyptic number.

5649878 is a deficient number, since it is larger than the sum of its proper divisors (3958042).

5649878 is a wasteful number, since it uses less digits than its factorization.

5649878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471.

The product of its digits is 483840, while the sum is 47.

The square root of 5649878 is about 2376.9472017695. The cubic root of 5649878 is about 178.1064674676.

The spelling of 5649878 in words is "five million, six hundred forty-nine thousand, eight hundred seventy-eight".