5661858 has 16 divisors (see below), whose sum is σ = 11437056. Its totient is φ = 1868400.

The previous prime is 5661839. The next prime is 5661893. The reversal of 5661858 is 8581665.

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, 4066 + ... + 5277.

It is an arithmetic number, because the mean of its divisors is an integer number (714816).

Almost surely, 2^5661858 is an apocalyptic number.

5661858 is an abundant number, since it is smaller than the sum of its proper divisors (5775198).

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

5661858 is a wasteful number, since it uses less digits than its factorization.

5661858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449.

The product of its digits is 57600, while the sum is 39.

The square root of 5661858 is about 2379.4659064588. The cubic root of 5661858 is about 178.2322642337.

The spelling of 5661858 in words is "five million, six hundred sixty-one thousand, eight hundred fifty-eight".