68191286 has 4 divisors (see below), whose sum is σ = 102286932. Its totient is φ = 34095642.

The previous prime is 68191273. The next prime is 68191309. The reversal of 68191286 is 68219186.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17047820 + ... + 17047823.

It is an arithmetic number, because the mean of its divisors is an integer number (25571733).

Almost surely, 2^68191286 is an apocalyptic number.

68191286 is a deficient number, since it is larger than the sum of its proper divisors (34095646).

68191286 is a wasteful number, since it uses less digits than its factorization.

68191286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34095645.

The product of its digits is 41472, while the sum is 41.

The square root of 68191286 is about 8257.8015234080. The cubic root of 68191286 is about 408.5478790723.

The spelling of 68191286 in words is "sixty-eight million, one hundred ninety-one thousand, two hundred eighty-six".