198610087 has 16 divisors (see below), whose sum is σ = 221518080. Its totient is φ = 176832000.

The previous prime is 198610057. The next prime is 198610091. The reversal of 198610087 is 780016891.

It is a cyclic number.

It is not a de Polignac number, because 198610087 - 2¹⁵ = 198577319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198610057) 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, 160989 + ... + 162217.

It is an arithmetic number, because the mean of its divisors is an integer number (13844880).

Almost surely, 2^198610087 is an apocalyptic number.

198610087 is a deficient number, since it is larger than the sum of its proper divisors (22907993).

198610087 is a wasteful number, since it uses less digits than its factorization.

198610087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 198610087 is about 14092.9091035173. The cubic root of 198610087 is about 583.4456871658.

The spelling of 198610087 in words is "one hundred ninety-eight million, six hundred ten thousand, eighty-seven".