198710455 has 32 divisors (see below), whose sum is σ = 263808000. Its totient is φ = 143016192.

The previous prime is 198710437. The next prime is 198710459. The reversal of 198710455 is 554017891.

It is a happy number.

It is not a de Polignac number, because 198710455 - 2¹⁷ = 198579383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198710459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434587 + ... + 435043.

It is an arithmetic number, because the mean of its divisors is an integer number (8244000).

Almost surely, 2^198710455 is an apocalyptic number.

198710455 is a deficient number, since it is larger than the sum of its proper divisors (65097545).

198710455 is a wasteful number, since it uses less digits than its factorization.

198710455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 198710455 is about 14096.4695934833. The cubic root of 198710455 is about 583.5439524252.

It can be divided in two parts, 1987104 and 55, that multiplied together give a triangular number (109290720 = T₁₄₇₈₄).

The spelling of 198710455 in words is "one hundred ninety-eight million, seven hundred ten thousand, four hundred fifty-five".