856498756 has 9 divisors (see below), whose sum is σ = 1498975261. Its totient is φ = 428220112.

The previous prime is 856498751. The next prime is 856498763. The reversal of 856498756 is 657894658.

The square root of 856498756 is 29266.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2924100 + 853574656 = 1710^2 + 29216^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 856498756.

It is not an unprimeable number, because it can be changed into a prime (856498751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 51216 + ... + 65848.

Almost surely, 2^856498756 is an apocalyptic number.

856498756 is the 29266-th square number.

It is an amenable number.

856498756 is a deficient number, since it is larger than the sum of its proper divisors (642476505).

856498756 is an frugal number, since it uses more digits than its factorization.

856498756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29270 (or 14635 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 58.

The cubic root of 856498756 is about 949.6762538582.

The spelling of 856498756 in words is "eight hundred fifty-six million, four hundred ninety-eight thousand, seven hundred fifty-six".