5871816 has 24 divisors (see below), whose sum is σ = 15903030. Its totient is φ = 1957248.

The previous prime is 5871797. The next prime is 5871823. The reversal of 5871816 is 6181785.

It can be written as a sum of positive squares in only one way, i.e., 4639716 + 1232100 = 2154^2 + 1110^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40705 + ... + 40848.

Almost surely, 2^5871816 is an apocalyptic number.

It is an amenable number.

5871816 is an abundant number, since it is smaller than the sum of its proper divisors (10031214).

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

5871816 is a wasteful number, since it uses less digits than its factorization.

5871816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81565 (or 81558 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 5871816 is about 2423.1830306438. The cubic root of 5871816 is about 180.4087009469.

The spelling of 5871816 in words is "five million, eight hundred seventy-one thousand, eight hundred sixteen".