806345520 has 40 divisors (see below), whose sum is σ = 2499671856. Its totient is φ = 215025408.

The previous prime is 806345497. The next prime is 806345537. The reversal of 806345520 is 25543608.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679647 + ... + 1680126.

Almost surely, 2^806345520 is an apocalyptic number.

806345520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

806345520 is an abundant number, since it is smaller than the sum of its proper divisors (1693326336).

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

806345520 is a wasteful number, since it uses less digits than its factorization.

806345520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359789 (or 3359783 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 806345520 is about 28396.2236925969. The cubic root of 806345520 is about 930.7657469392.

The spelling of 806345520 in words is "eight hundred six million, three hundred forty-five thousand, five hundred twenty".