8611722 has 48 divisors (see below), whose sum is σ = 21857472. Its totient is φ = 2399040.

The previous prime is 8611721. The next prime is 8611723. The reversal of 8611722 is 2271168.

It is an interprime number because it is at equal distance from previous prime (8611721) and next prime (8611723).

It is not an unprimeable number, because it can be changed into a prime (8611721) 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 23 ways as a sum of consecutive naturals, for example, 4333 + ... + 5999.

It is an arithmetic number, because the mean of its divisors is an integer number (455364).

Almost surely, 2^8611722 is an apocalyptic number.

8611722 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 8611722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10928736).

8611722 is an abundant number, since it is smaller than the sum of its proper divisors (13245750).

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

8611722 is a wasteful number, since it uses less digits than its factorization.

8611722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723 (or 1720 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 8611722 is about 2934.5735635693. The cubic root of 8611722 is about 204.9730045753.

The spelling of 8611722 in words is "eight million, six hundred eleven thousand, seven hundred twenty-two".