806656880 has 20 divisors (see below), whose sum is σ = 1875477432. Its totient is φ = 322662720.

The previous prime is 806656871. The next prime is 806656889. The reversal of 806656880 is 88656608.

It is an interprime number because it is at equal distance from previous prime (806656871) and next prime (806656889).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806656889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5041526 + ... + 5041685.

Almost surely, 2^806656880 is an apocalyptic number.

806656880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

806656880 is an abundant number, since it is smaller than the sum of its proper divisors (1068820552).

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

806656880 is a wasteful number, since it uses less digits than its factorization.

806656880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10083224 (or 10083218 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 806656880 is about 28401.7055825878. The cubic root of 806656880 is about 930.8855326153.

It can be divided in two parts, 8066 and 56880, that added together give a palindrome (64946).

The spelling of 806656880 in words is "eight hundred six million, six hundred fifty-six thousand, eight hundred eighty".