198277863 has 24 divisors (see below), whose sum is σ = 323723520. Its totient is φ = 107336880.

The previous prime is 198277853. The next prime is 198277873. The reversal of 198277863 is 368772891.

It is an interprime number because it is at equal distance from previous prime (198277853) and next prime (198277873).

It is not a de Polignac number, because 198277863 - 2⁹ = 198277351 is a prime.

It is a super-2 number, since 2×198277863² = 78628221911693538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198277853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32703 + ... + 38288.

It is an arithmetic number, because the mean of its divisors is an integer number (13488480).

Almost surely, 2^198277863 is an apocalyptic number.

198277863 is a deficient number, since it is larger than the sum of its proper divisors (125445657).

198277863 is a wasteful number, since it uses less digits than its factorization.

198277863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71027 (or 71020 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 198277863 is about 14081.1172497071. The cubic root of 198277863 is about 583.1201870161.

The spelling of 198277863 in words is "one hundred ninety-eight million, two hundred seventy-seven thousand, eight hundred sixty-three".