8722001 has 2 divisors, whose sum is σ = 8722002. Its totient is φ = 8722000.

The previous prime is 8721997. The next prime is 8722009. The reversal of 8722001 is 1002278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8549776 + 172225 = 2924^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 8722001 - 2² = 8721997 is a prime.

It is a Chen prime.

It is equal to p₅₈₅₁₁₀ and since 8722001 and 585110 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8722009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4361000 + 4361001.

It is an arithmetic number, because the mean of its divisors is an integer number (4361001).

Almost surely, 2^8722001 is an apocalyptic number.

It is an amenable number.

8722001 is a deficient number, since it is larger than the sum of its proper divisors (1).

8722001 is an equidigital number, since it uses as much as digits as its factorization.

8722001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 8722001 is about 2953.3034046640. The cubic root of 8722001 is about 205.8442361016.

Adding to 8722001 its reverse (1002278), we get a palindrome (9724279).

The spelling of 8722001 in words is "eight million, seven hundred twenty-two thousand, one".