198908713 has 6 divisors (see below), whose sum is σ = 199833774. Its totient is φ = 197987904.

The previous prime is 198908657. The next prime is 198908719. The reversal of 198908713 is 317809891.

It can be written as a sum of positive squares in 3 ways, for example, as 90478144 + 108430569 = 9512^2 + 10413^2 .

It is not a de Polignac number, because 198908713 - 2¹⁷ = 198777641 is a prime.

It is a super-2 number, since 2×198908713² = 79129352214632738, which contains 22 as substring.

It is the 14104-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198908719) by changing a digit.

It is a nontrivial repunit in base 14103.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50545 + ... + 54337.

It is an arithmetic number, because the mean of its divisors is an integer number (33305629).

Almost surely, 2^198908713 is an apocalyptic number.

It is an amenable number.

198908713 is a deficient number, since it is larger than the sum of its proper divisors (925061).

198908713 is an frugal number, since it uses more digits than its factorization.

198908713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251 (or 4022 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 198908713 is about 14103.5000265891. The cubic root of 198908713 is about 583.7379596671.

The spelling of 198908713 in words is "one hundred ninety-eight million, nine hundred eight thousand, seven hundred thirteen".