856648246 has 4 divisors (see below), whose sum is σ = 1284972372. Its totient is φ = 428324122.

The previous prime is 856648223. The next prime is 856648267. The reversal of 856648246 is 642846658.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 856648246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214162060 + ... + 214162063.

It is an arithmetic number, because the mean of its divisors is an integer number (321243093).

Almost surely, 2^856648246 is an apocalyptic number.

856648246 is a deficient number, since it is larger than the sum of its proper divisors (428324126).

856648246 is a wasteful number, since it uses less digits than its factorization.

856648246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428324125.

The product of its digits is 2211840, while the sum is 49.

The square root of 856648246 is about 29268.5538761313. The cubic root of 856648246 is about 949.7315015915.

The spelling of 856648246 in words is "eight hundred fifty-six million, six hundred forty-eight thousand, two hundred forty-six".