5780861 has 4 divisors (see below), whose sum is σ = 5786592. Its totient is φ = 5775132.

The previous prime is 5780857. The next prime is 5780881. The reversal of 5780861 is 1680875.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5780861 - 2² = 5780857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5780821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905 + ... + 3518.

It is an arithmetic number, because the mean of its divisors is an integer number (1446648).

Almost surely, 2^5780861 is an apocalyptic number.

It is an amenable number.

5780861 is a deficient number, since it is larger than the sum of its proper divisors (5731).

5780861 is a wasteful number, since it uses less digits than its factorization.

5780861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 5780861 is about 2404.3421137600. The cubic root of 5780861 is about 179.4723332669.

The spelling of 5780861 in words is "five million, seven hundred eighty thousand, eight hundred sixty-one".