5644278 has 12 divisors (see below), whose sum is σ = 12229308. Its totient is φ = 1881420.

The previous prime is 5644267. The next prime is 5644283. The reversal of 5644278 is 8724465.

5644278 is a `hidden beast` number, since 5 + 644 + 2 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156768 + ... + 156803.

It is an arithmetic number, because the mean of its divisors is an integer number (1019109).

Almost surely, 2^5644278 is an apocalyptic number.

5644278 is an abundant number, since it is smaller than the sum of its proper divisors (6585030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5644278 is a wasteful number, since it uses less digits than its factorization.

5644278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313579 (or 313576 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 5644278 is about 2375.7689281578. The cubic root of 5644278 is about 178.0476033099.

The spelling of 5644278 in words is "five million, six hundred forty-four thousand, two hundred seventy-eight".