855198612 has 144 divisors (see below), whose sum is σ = 2323776000. Its totient is φ = 264695040.

The previous prime is 855198599. The next prime is 855198629. The reversal of 855198612 is 216891558.

It is a happy number.

855198612 is a `hidden beast` number, since 8 + 551 + 9 + 86 + 12 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5739514 + ... + 5739662.

Almost surely, 2^855198612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855198612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161888000).

855198612 is an abundant number, since it is smaller than the sum of its proper divisors (1468577388).

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

855198612 is a wasteful number, since it uses less digits than its factorization.

855198612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 361 counting only the distinct ones).

The product of its digits is 172800, while the sum is 45.

The square root of 855198612 is about 29243.7790307614. The cubic root of 855198612 is about 949.1954821278.

The spelling of 855198612 in words is "eight hundred fifty-five million, one hundred ninety-eight thousand, six hundred twelve".