808505712 has 240 divisors, whose sum is σ = 2731269632. Its totient is φ = 226748160.

The previous prime is 808505693. The next prime is 808505717. The reversal of 808505712 is 217505808.

808505712 is a `hidden beast` number, since 8 + 0 + 85 + 0 + 571 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808505717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1659933 + ... + 1660419.

Almost surely, 2^808505712 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 808505712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365634816).

808505712 is an abundant number, since it is smaller than the sum of its proper divisors (1922763920).

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

808505712 is a wasteful number, since it uses less digits than its factorization.

808505712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 808505712 is about 28434.2348587051. The cubic root of 808505712 is about 931.5961766783.

The spelling of 808505712 in words is "eight hundred eight million, five hundred five thousand, seven hundred twelve".