8728897 has 2 divisors, whose sum is σ = 8728898. Its totient is φ = 8728896.

The previous prime is 8728883. The next prime is 8728901. The reversal of 8728897 is 7988278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7230721 + 1498176 = 2689^2 + 1224^2 .

It is a cyclic number.

It is not a de Polignac number, because 8728897 - 2¹¹ = 8726849 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8728897.

It is not a weakly prime, because it can be changed into another prime (8728807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4364448 + 4364449.

It is an arithmetic number, because the mean of its divisors is an integer number (4364449).

Almost surely, 2^8728897 is an apocalyptic number.

It is an amenable number.

8728897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8728897 is an equidigital number, since it uses as much as digits as its factorization.

8728897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 49.

The square root of 8728897 is about 2954.4706801727. The cubic root of 8728897 is about 205.8984716648.

The spelling of 8728897 in words is "eight million, seven hundred twenty-eight thousand, eight hundred ninety-seven".