68281366 has 4 divisors (see below), whose sum is σ = 102422052. Its totient is φ = 34140682.

The previous prime is 68281357. The next prime is 68281379. The reversal of 68281366 is 66318286.

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

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, 17070340 + ... + 17070343.

It is an arithmetic number, because the mean of its divisors is an integer number (25605513).

Almost surely, 2^68281366 is an apocalyptic number.

68281366 is a deficient number, since it is larger than the sum of its proper divisors (34140686).

68281366 is a wasteful number, since it uses less digits than its factorization.

68281366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34140685.

The product of its digits is 82944, while the sum is 40.

The square root of 68281366 is about 8263.2539595489. The cubic root of 68281366 is about 408.7276957906.

The spelling of 68281366 in words is "sixty-eight million, two hundred eighty-one thousand, three hundred sixty-six".