68351813 has 8 divisors (see below), whose sum is σ = 69014400. Its totient is φ = 67692240.

The previous prime is 68351809. The next prime is 68351819. The reversal of 68351813 is 31815386.

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

It is a cyclic number.

It is not a de Polignac number, because 68351813 - 2² = 68351809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68351819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93656 + ... + 94382.

It is an arithmetic number, because the mean of its divisors is an integer number (8626800).

Almost surely, 2^68351813 is an apocalyptic number.

It is an amenable number.

68351813 is a deficient number, since it is larger than the sum of its proper divisors (662587).

68351813 is a wasteful number, since it uses less digits than its factorization.

68351813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507.

The product of its digits is 17280, while the sum is 35.

The square root of 68351813 is about 8267.5155276540. The cubic root of 68351813 is about 408.8682111564.

The spelling of 68351813 in words is "sixty-eight million, three hundred fifty-one thousand, eight hundred thirteen".