5787991 has 8 divisors (see below), whose sum is σ = 6403968. Its totient is φ = 5187000.

The previous prime is 5787983. The next prime is 5788001. The reversal of 5787991 is 1997875.

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

It is a cyclic number.

It is not a de Polignac number, because 5787991 - 2³ = 5787983 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 (5787961) 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, 2925 + ... + 4486.

It is an arithmetic number, because the mean of its divisors is an integer number (800496).

Almost surely, 2^5787991 is an apocalyptic number.

5787991 is a deficient number, since it is larger than the sum of its proper divisors (615977).

5787991 is a wasteful number, since it uses less digits than its factorization.

5787991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493.

The product of its digits is 158760, while the sum is 46.

The square root of 5787991 is about 2405.8243909313. The cubic root of 5787991 is about 179.5460888316.

It can be divided in two parts, 57879 and 91, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 5787991 in words is "five million, seven hundred eighty-seven thousand, nine hundred ninety-one".