865198146 has 32 divisors (see below), whose sum is σ = 1760698368. Its totient is φ = 283392720.

The previous prime is 865198099. The next prime is 865198171. The reversal of 865198146 is 641891568.

It is a junction number, because it is equal to n+sod(n) for n = 865198095 and 865198104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75615 + ... + 86301.

It is an arithmetic number, because the mean of its divisors is an integer number (55021824).

Almost surely, 2^865198146 is an apocalyptic number.

865198146 is an abundant number, since it is smaller than the sum of its proper divisors (895500222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865198146 is a wasteful number, since it uses less digits than its factorization.

865198146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10926.

The product of its digits is 414720, while the sum is 48.

The square root of 865198146 is about 29414.2507298758. The cubic root of 865198146 is about 952.8806913038.

The spelling of 865198146 in words is "eight hundred sixty-five million, one hundred ninety-eight thousand, one hundred forty-six".