870198566 has 8 divisors (see below), whose sum is σ = 1306988784. Its totient is φ = 434535640.

The previous prime is 870198559. The next prime is 870198577. The reversal of 870198566 is 665891078.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279890 + ... + 282981.

It is an arithmetic number, because the mean of its divisors is an integer number (163373598).

Almost surely, 2^870198566 is an apocalyptic number.

870198566 is a deficient number, since it is larger than the sum of its proper divisors (436790218).

870198566 is a wasteful number, since it uses less digits than its factorization.

870198566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563646.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 870198566 is about 29499.1282244069. The cubic root of 870198566 is about 954.7128934189.

The spelling of 870198566 in words is "eight hundred seventy million, one hundred ninety-eight thousand, five hundred sixty-six".