8521703 has 2 divisors, whose sum is σ = 8521704. Its totient is φ = 8521702.

The previous prime is 8521699. The next prime is 8521739. The reversal of 8521703 is 3071258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8521703 - 2² = 8521699 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8521763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4260851 + 4260852.

It is an arithmetic number, because the mean of its divisors is an integer number (4260852).

Almost surely, 2^8521703 is an apocalyptic number.

8521703 is a deficient number, since it is larger than the sum of its proper divisors (1).

8521703 is an equidigital number, since it uses as much as digits as its factorization.

8521703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 8521703 is about 2919.1956083826. The cubic root of 8521703 is about 204.2563019069.

It can be divided in two parts, 852 and 1703, that multiplied together give a triangular number (1450956 = T₁₇₀₃).

The spelling of 8521703 in words is "eight million, five hundred twenty-one thousand, seven hundred three".