68816461 has 8 divisors (see below), whose sum is σ = 82786880. Its totient is φ = 55880928.

The previous prime is 68816441. The next prime is 68816471. The reversal of 68816461 is 16461886.

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 68816461 - 2¹³ = 68808269 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68816401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 258576 + ... + 258841.

It is an arithmetic number, because the mean of its divisors is an integer number (10348360).

Almost surely, 2^68816461 is an apocalyptic number.

It is an amenable number.

68816461 is a deficient number, since it is larger than the sum of its proper divisors (13970419).

68816461 is a wasteful number, since it uses less digits than its factorization.

68816461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517443.

The product of its digits is 55296, while the sum is 40.

The square root of 68816461 is about 8295.5687568726. The cubic root of 68816461 is about 409.7925998427.

The spelling of 68816461 in words is "sixty-eight million, eight hundred sixteen thousand, four hundred sixty-one".