5657220 has 72 divisors (see below), whose sum is σ = 17513496. Its totient is φ = 1477632.

The previous prime is 5657207. The next prime is 5657251. The reversal of 5657220 is 227565.

5657220 is a `hidden beast` number, since 5 + 657 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1272384 + 4384836 = 1128^2 + 2094^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9244 + ... + 9836.

It is an arithmetic number, because the mean of its divisors is an integer number (243243).

Almost surely, 2^5657220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5657220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8756748).

5657220 is an abundant number, since it is smaller than the sum of its proper divisors (11856276).

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

5657220 is a wasteful number, since it uses less digits than its factorization.

5657220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 5657220 is about 2378.4911183353. The cubic root of 5657220 is about 178.1835836850.

The spelling of 5657220 in words is "five million, six hundred fifty-seven thousand, two hundred twenty".