612897198 has 16 divisors (see below), whose sum is σ = 1230567120. Its totient is φ = 203503616.

The previous prime is 612897163. The next prime is 612897199. The reversal of 612897198 is 891798216.

It is a self number, because there is not a number n which added to its sum of digits gives 612897198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612897199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197193 + ... + 200276.

It is an arithmetic number, because the mean of its divisors is an integer number (76910445).

Almost surely, 2^612897198 is an apocalyptic number.

612897198 is an abundant number, since it is smaller than the sum of its proper divisors (617669922).

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

612897198 is a wasteful number, since it uses less digits than its factorization.

612897198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397731.

The product of its digits is 435456, while the sum is 51.

The square root of 612897198 is about 24756.7606523955. The cubic root of 612897198 is about 849.4331621010.

The spelling of 612897198 in words is "six hundred twelve million, eight hundred ninety-seven thousand, one hundred ninety-eight".