8643722 has 8 divisors (see below), whose sum is σ = 13529376. Its totient is φ = 4133932.

The previous prime is 8643721. The next prime is 8643749. The reversal of 8643722 is 2273468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8643721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93908 + ... + 93999.

It is an arithmetic number, because the mean of its divisors is an integer number (1691172).

Almost surely, 2^8643722 is an apocalyptic number.

8643722 is a deficient number, since it is larger than the sum of its proper divisors (4885654).

8643722 is a wasteful number, since it uses less digits than its factorization.

8643722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187932.

The product of its digits is 16128, while the sum is 32.

The square root of 8643722 is about 2940.0207482261. The cubic root of 8643722 is about 205.2265747900.

The spelling of 8643722 in words is "eight million, six hundred forty-three thousand, seven hundred twenty-two".