856226590 has 16 divisors (see below), whose sum is σ = 1631867472. Its totient is φ = 322344064.

The previous prime is 856226531. The next prime is 856226593. The reversal of 856226590 is 95622658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856226593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2518144 + ... + 2518483.

It is an arithmetic number, because the mean of its divisors is an integer number (101991717).

Almost surely, 2^856226590 is an apocalyptic number.

856226590 is a deficient number, since it is larger than the sum of its proper divisors (775640882).

856226590 is a wasteful number, since it uses less digits than its factorization.

856226590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036651.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 856226590 is about 29261.3497638096. The cubic root of 856226590 is about 949.5756516612.

The spelling of 856226590 in words is "eight hundred fifty-six million, two hundred twenty-six thousand, five hundred ninety".