68198145 has 8 divisors (see below), whose sum is σ = 109117056. Its totient is φ = 36372336.

The previous prime is 68198113. The next prime is 68198167. The reversal of 68198145 is 54189186.

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

It is not a de Polignac number, because 68198145 - 2⁵ = 68198113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68198097 and 68198106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273257 + ... + 2273286.

It is an arithmetic number, because the mean of its divisors is an integer number (13639632).

Almost surely, 2^68198145 is an apocalyptic number.

It is an amenable number.

68198145 is a deficient number, since it is larger than the sum of its proper divisors (40918911).

68198145 is a wasteful number, since it uses less digits than its factorization.

68198145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546551.

The product of its digits is 69120, while the sum is 42.

The square root of 68198145 is about 8258.2168172070. The cubic root of 68198145 is about 408.5615765015.

The spelling of 68198145 in words is "sixty-eight million, one hundred ninety-eight thousand, one hundred forty-five".