198977345 has 8 divisors (see below), whose sum is σ = 272883264. Its totient is φ = 136441584.

The previous prime is 198977279. The next prime is 198977351. The reversal of 198977345 is 543779891.

198977345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198977345 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842499 + ... + 2842568.

It is an arithmetic number, because the mean of its divisors is an integer number (34110408).

Almost surely, 2^198977345 is an apocalyptic number.

It is an amenable number.

198977345 is a deficient number, since it is larger than the sum of its proper divisors (73905919).

198977345 is an equidigital number, since it uses as much as digits as its factorization.

198977345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685079.

The product of its digits is 1905120, while the sum is 53.

The square root of 198977345 is about 14105.9329716258. The cubic root of 198977345 is about 583.8050901212.

The spelling of 198977345 in words is "one hundred ninety-eight million, nine hundred seventy-seven thousand, three hundred forty-five".