8722646 has 4 divisors (see below), whose sum is σ = 13083972. Its totient is φ = 4361322.

The previous prime is 8722643. The next prime is 8722661. The reversal of 8722646 is 6462278.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2180660 + ... + 2180663.

It is an arithmetic number, because the mean of its divisors is an integer number (3270993).

Almost surely, 2^8722646 is an apocalyptic number.

8722646 is a deficient number, since it is larger than the sum of its proper divisors (4361326).

8722646 is a wasteful number, since it uses less digits than its factorization.

8722646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361325.

The product of its digits is 32256, while the sum is 35.

The square root of 8722646 is about 2953.4126023974. The cubic root of 8722646 is about 205.8493101001.

The spelling of 8722646 in words is "eight million, seven hundred twenty-two thousand, six hundred forty-six".