5657823 has 8 divisors (see below), whose sum is σ = 8382000. Its totient is φ = 3771864.

The previous prime is 5657789. The next prime is 5657831. The reversal of 5657823 is 3287565.

5657823 is a `hidden beast` number, since 565 + 78 + 23 = 666.

It is not a de Polignac number, because 5657823 - 2¹⁰ = 5656799 is a prime.

It is a super-3 number, since 3×5657823³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

5657823 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5657423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104748 + ... + 104801.

It is an arithmetic number, because the mean of its divisors is an integer number (1047750).

Almost surely, 2^5657823 is an apocalyptic number.

5657823 is a deficient number, since it is larger than the sum of its proper divisors (2724177).

5657823 is a wasteful number, since it uses less digits than its factorization.

5657823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209558 (or 209552 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 5657823 is about 2378.6178759944. The cubic root of 5657823 is about 178.1899142905.

The spelling of 5657823 in words is "five million, six hundred fifty-seven thousand, eight hundred twenty-three".