800691808 has 96 divisors (see below), whose sum is σ = 1888524288. Its totient is φ = 326937600.

The previous prime is 800691791. The next prime is 800691811. The reversal of 800691808 is 808196008.

It is a happy number.

It is a super-2 number, since 2×800691808² = 1282214742796617728, which contains 22 as substring.

It is a congruent number.

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, 464388 + ... + 466108.

It is an arithmetic number, because the mean of its divisors is an integer number (19672128).

Almost surely, 2^800691808 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 800691808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944262144).

800691808 is an abundant number, since it is smaller than the sum of its proper divisors (1087832480).

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

800691808 is a wasteful number, since it uses less digits than its factorization.

800691808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 800691808 is about 28296.4981578993. The cubic root of 800691808 is about 928.5852803163.

The spelling of 800691808 in words is "eight hundred million, six hundred ninety-one thousand, eight hundred eight".