28600709 has 2 divisors, whose sum is σ = 28600710. Its totient is φ = 28600708.

The previous prime is 28600687. The next prime is 28600711. The reversal of 28600709 is 90700682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 31684 = 5345^2 + 178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28600709 is a prime.

Together with 28600711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28600009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300354 + 14300355.

It is an arithmetic number, because the mean of its divisors is an integer number (14300355).

Almost surely, 2^28600709 is an apocalyptic number.

It is an amenable number.

28600709 is a deficient number, since it is larger than the sum of its proper divisors (1).

28600709 is an equidigital number, since it uses as much as digits as its factorization.

28600709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 28600709 is about 5347.9630701791. The cubic root of 28600709 is about 305.8151053852.

The spelling of 28600709 in words is "twenty-eight million, six hundred thousand, seven hundred nine".