806550390 has 24 divisors (see below), whose sum is σ = 2097031248. Its totient is φ = 215080080.

The previous prime is 806550377. The next prime is 806550413. The reversal of 806550390 is 93055608.

806550390 is a `hidden beast` number, since 8 + 0 + 65 + 503 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4480746 + ... + 4480925.

It is an arithmetic number, because the mean of its divisors is an integer number (87376302).

Almost surely, 2^806550390 is an apocalyptic number.

806550390 is an abundant number, since it is smaller than the sum of its proper divisors (1290480858).

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

806550390 is a wasteful number, since it uses less digits than its factorization.

806550390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8961684 (or 8961681 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 806550390 is about 28399.8308093552. The cubic root of 806550390 is about 930.8445675055.

The spelling of 806550390 in words is "eight hundred six million, five hundred fifty thousand, three hundred ninety".