8722069 has 4 divisors (see below), whose sum is σ = 9022860. Its totient is φ = 8421280.

The previous prime is 8722033. The next prime is 8722079. The reversal of 8722069 is 9602278.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3659569 + 5062500 = 1913^2 + 2250^2 .

It is a cyclic number.

It is not a de Polignac number, because 8722069 - 2⁷ = 8721941 is a prime.

It is a super-2 number, since 2×8722069² = 152148975281522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

8722069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722009) 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, 150352 + ... + 150409.

It is an arithmetic number, because the mean of its divisors is an integer number (2255715).

Almost surely, 2^8722069 is an apocalyptic number.

It is an amenable number.

8722069 is a deficient number, since it is larger than the sum of its proper divisors (300791).

8722069 is a wasteful number, since it uses less digits than its factorization.

8722069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300790.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 8722069 is about 2953.3149171736. The cubic root of 8722069 is about 205.8447710466.

The spelling of 8722069 in words is "eight million, seven hundred twenty-two thousand, sixty-nine".