998508703 has 2 divisors, whose sum is σ = 998508704. Its totient is φ = 998508702.

The previous prime is 998508659. The next prime is 998508733. The reversal of 998508703 is 307805899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998508703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998508733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499254351 + 499254352.

It is an arithmetic number, because the mean of its divisors is an integer number (499254352).

Almost surely, 2^998508703 is an apocalyptic number.

998508703 is a deficient number, since it is larger than the sum of its proper divisors (1).

998508703 is an equidigital number, since it uses as much as digits as its factorization.

998508703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 998508703 is about 31599.1883281834. The cubic root of 998508703 is about 999.5026536877.

The spelling of 998508703 in words is "nine hundred ninety-eight million, five hundred eight thousand, seven hundred three".