805684880 has 160 divisors (see below), whose sum is σ = 2515339008. Its totient is φ = 231782400.

The previous prime is 805684877. The next prime is 805684921. The reversal of 805684880 is 88486508.

It is a super-2 number, since 2×805684880² = 1298256251721228800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75050 + ... + 85110.

Almost surely, 2^805684880 is an apocalyptic number.

805684880 is a gapful number since it is divisible by the number (80) 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 805684880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257669504).

805684880 is an abundant number, since it is smaller than the sum of its proper divisors (1709654128).

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

805684880 is a wasteful number, since it uses less digits than its factorization.

805684880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105 (or 10099 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The square root of 805684880 is about 28384.5887763061. The cubic root of 805684880 is about 930.5114849328.

The spelling of 805684880 in words is "eight hundred five million, six hundred eighty-four thousand, eight hundred eighty".