68481805 has 16 divisors (see below), whose sum is σ = 94152960. Its totient is φ = 46841472.

The previous prime is 68481793. The next prime is 68481817. The reversal of 68481805 is 50818486.

It is an interprime number because it is at equal distance from previous prime (68481793) and next prime (68481817).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68481805 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13137 + ... + 17593.

It is an arithmetic number, because the mean of its divisors is an integer number (5884560).

Almost surely, 2^68481805 is an apocalyptic number.

It is an amenable number.

68481805 is a deficient number, since it is larger than the sum of its proper divisors (25671155).

68481805 is a wasteful number, since it uses less digits than its factorization.

68481805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 68481805 is about 8275.3734054724. The cubic root of 68481805 is about 409.1272432449.

The spelling of 68481805 in words is "sixty-eight million, four hundred eighty-one thousand, eight hundred five".