5691000 has 128 divisors (see below), whose sum is σ = 20367360. Its totient is φ = 1296000.

The previous prime is 5690987. The next prime is 5691001. The reversal of 5691000 is 1965.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5691001) 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 31 ways as a sum of consecutive naturals, for example, 20865 + ... + 21135.

It is an arithmetic number, because the mean of its divisors is an integer number (159120).

Almost surely, 2^5691000 is an apocalyptic number.

5691000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5691000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10183680).

5691000 is an abundant number, since it is smaller than the sum of its proper divisors (14676360).

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

5691000 is a wasteful number, since it uses less digits than its factorization.

5691000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 5691000 is about 2385.5816900706. The cubic root of 5691000 is about 178.5375326140.

Adding to 5691000 its reverse (1965), we get a palindrome (5692965).

The spelling of 5691000 in words is "five million, six hundred ninety-one thousand".