198056715 has 16 divisors (see below), whose sum is σ = 335531808. Its totient is φ = 99416576.

The previous prime is 198056711. The next prime is 198056723. The reversal of 198056715 is 517650891.

It is a cyclic number.

It is not a de Polignac number, because 198056715 - 2² = 198056711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198056711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388092 + ... + 388601.

It is an arithmetic number, because the mean of its divisors is an integer number (20970738).

Almost surely, 2^198056715 is an apocalyptic number.

198056715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198056715 is a deficient number, since it is larger than the sum of its proper divisors (137475093).

198056715 is a wasteful number, since it uses less digits than its factorization.

198056715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776718.

The product of its (nonzero) digits is 75600, while the sum is 42.

The square root of 198056715 is about 14073.2624149484. The cubic root of 198056715 is about 582.9033131901.

The spelling of 198056715 in words is "one hundred ninety-eight million, fifty-six thousand, seven hundred fifteen".