68416813 has 8 divisors (see below), whose sum is σ = 69710400. Its totient is φ = 67127808.

The previous prime is 68416801. The next prime is 68416837. The reversal of 68416813 is 31861486.

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 68416813 - 2⁵ = 68416781 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 (68416013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47853 + ... + 49261.

It is an arithmetic number, because the mean of its divisors is an integer number (8713800).

Almost surely, 2^68416813 is an apocalyptic number.

It is an amenable number.

68416813 is a deficient number, since it is larger than the sum of its proper divisors (1293587).

68416813 is a wasteful number, since it uses less digits than its factorization.

68416813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291.

The product of its digits is 27648, while the sum is 37.

The square root of 68416813 is about 8271.4456414825. The cubic root of 68416813 is about 408.9977761848.

The spelling of 68416813 in words is "sixty-eight million, four hundred sixteen thousand, eight hundred thirteen".