5691816 has 64 divisors (see below), whose sum is σ = 17035200. Its totient is φ = 1750464.

The previous prime is 5691799. The next prime is 5691823. The reversal of 5691816 is 6181965.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1795 + ... + 3821.

It is an arithmetic number, because the mean of its divisors is an integer number (266175).

Almost surely, 2^5691816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5691816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8517600).

5691816 is an abundant number, since it is smaller than the sum of its proper divisors (11343384).

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

5691816 is a wasteful number, since it uses less digits than its factorization.

5691816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2045 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 5691816 is about 2385.7527114100. The cubic root of 5691816 is about 178.5460653654.

The spelling of 5691816 in words is "five million, six hundred ninety-one thousand, eight hundred sixteen".