68979198 has 16 divisors (see below), whose sum is σ = 139902336. Its totient is φ = 22669080.

The previous prime is 68979191. The next prime is 68979199. The reversal of 68979198 is 89197986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68979191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80536 + ... + 81387.

It is an arithmetic number, because the mean of its divisors is an integer number (8743896).

Almost surely, 2^68979198 is an apocalyptic number.

68979198 is an abundant number, since it is smaller than the sum of its proper divisors (70923138).

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

68979198 is a wasteful number, since it uses less digits than its factorization.

68979198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161999.

The product of its digits is 1959552, while the sum is 57.

The square root of 68979198 is about 8305.3716352732. The cubic root of 68979198 is about 410.1153710620.

The spelling of 68979198 in words is "sixty-eight million, nine hundred seventy-nine thousand, one hundred ninety-eight".