8722785 has 32 divisors (see below), whose sum is σ = 14999040. Its totient is φ = 4313088.

The previous prime is 8722757. The next prime is 8722789. The reversal of 8722785 is 5872278.

It is not a de Polignac number, because 8722785 - 2¹³ = 8714593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8722789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19929 + ... + 20361.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^8722785 is an apocalyptic number.

8722785 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8722785 is a deficient number, since it is larger than the sum of its proper divisors (6276255).

8722785 is a wasteful number, since it uses less digits than its factorization.

8722785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537.

The product of its digits is 62720, while the sum is 39.

The square root of 8722785 is about 2953.4361344035. The cubic root of 8722785 is about 205.8504035337.

The spelling of 8722785 in words is "eight million, seven hundred twenty-two thousand, seven hundred eighty-five".