68208481 has 4 divisors (see below), whose sum is σ = 74409264. Its totient is φ = 62007700.

The previous prime is 68208473. The next prime is 68208523. The reversal of 68208481 is 18480286.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68208481 - 2³ = 68208473 is a prime.

It is a super-2 number, since 2×68208481² = 9304793760654722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68208481.

It is not an unprimeable number, because it can be changed into a prime (68208451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3100375 + ... + 3100396.

It is an arithmetic number, because the mean of its divisors is an integer number (18602316).

Almost surely, 2^68208481 is an apocalyptic number.

It is an amenable number.

68208481 is a deficient number, since it is larger than the sum of its proper divisors (6200783).

68208481 is a wasteful number, since it uses less digits than its factorization.

68208481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6200782.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 68208481 is about 8258.8425944560. The cubic root of 68208481 is about 408.5822157684.

The spelling of 68208481 in words is "sixty-eight million, two hundred eight thousand, four hundred eighty-one".