5655840 has 48 divisors (see below), whose sum is σ = 17817408. Its totient is φ = 1508096.

The previous prime is 5655823. The next prime is 5655851. The reversal of 5655840 is 485565.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×5655840² = 63977052211200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5412 + ... + 6371.

It is an arithmetic number, because the mean of its divisors is an integer number (371196).

Almost surely, 2^5655840 is an apocalyptic number.

It is an amenable number.

5655840 is an abundant number, since it is smaller than the sum of its proper divisors (12161568).

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

5655840 is a wasteful number, since it uses less digits than its factorization.

5655840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11801 (or 11793 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 5655840 is about 2378.2010007567. The cubic root of 5655840 is about 178.1690940392.

The spelling of 5655840 in words is "five million, six hundred fifty-five thousand, eight hundred forty".