68247994 has 8 divisors (see below), whose sum is σ = 104303700. Its totient is φ = 33480096.

The previous prime is 68247989. The next prime is 68248007. The reversal of 68247994 is 49974286.

It can be written as a sum of positive squares in 2 ways, for example, as 67026969 + 1221025 = 8187^2 + 1105^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 321819 + ... + 322030.

Almost surely, 2^68247994 is an apocalyptic number.

68247994 is a deficient number, since it is larger than the sum of its proper divisors (36055706).

68247994 is a wasteful number, since it uses less digits than its factorization.

68247994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643904.

The product of its digits is 870912, while the sum is 49.

The square root of 68247994 is about 8261.2344113940. The cubic root of 68247994 is about 408.6610974187.

The spelling of 68247994 in words is "sixty-eight million, two hundred forty-seven thousand, nine hundred ninety-four".