5661830 has 8 divisors (see below), whose sum is σ = 10191312. Its totient is φ = 2264728.

The previous prime is 5661823. The next prime is 5661839. The reversal of 5661830 is 381665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5661793 and 5661802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283082 + ... + 283101.

It is an arithmetic number, because the mean of its divisors is an integer number (1273914).

Almost surely, 2^5661830 is an apocalyptic number.

5661830 is a deficient number, since it is larger than the sum of its proper divisors (4529482).

5661830 is a wasteful number, since it uses less digits than its factorization.

5661830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566190.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 5661830 is about 2379.4600227783. The cubic root of 5661830 is about 178.2319704249.

The spelling of 5661830 in words is "five million, six hundred sixty-one thousand, eight hundred thirty".