5780661 has 8 divisors (see below), whose sum is σ = 7720224. Its totient is φ = 3847440.

The previous prime is 5780633. The next prime is 5780681. The reversal of 5780661 is 1660875.

5780661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 5780661 - 2¹⁸ = 5518517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5780611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290 + ... + 3636.

It is an arithmetic number, because the mean of its divisors is an integer number (965028).

Almost surely, 2^5780661 is an apocalyptic number.

It is an amenable number.

5780661 is a deficient number, since it is larger than the sum of its proper divisors (1939563).

5780661 is a wasteful number, since it uses less digits than its factorization.

5780661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 5780661 is about 2404.3005219814. The cubic root of 5780661 is about 179.4702635129.

It can be divided in two parts, 5780 and 661, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 5780661 in words is "five million, seven hundred eighty thousand, six hundred sixty-one".