68584681 has 16 divisors (see below), whose sum is σ = 81959040. Its totient is φ = 56654080.

The previous prime is 68584667. The next prime is 68584693. The reversal of 68584681 is 18648586.

It is a cyclic number.

It is not a de Polignac number, because 68584681 - 2¹³ = 68576489 is a prime.

It is a super-2 number, since 2×68584681² = 9407716935743522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68584631) 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 15 ways as a sum of consecutive naturals, for example, 901 + ... + 11746.

It is an arithmetic number, because the mean of its divisors is an integer number (5122440).

Almost surely, 2^68584681 is an apocalyptic number.

It is an amenable number.

68584681 is a deficient number, since it is larger than the sum of its proper divisors (13374359).

68584681 is a wasteful number, since it uses less digits than its factorization.

68584681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12704.

The product of its digits is 368640, while the sum is 46.

The square root of 68584681 is about 8281.5868648466. The cubic root of 68584681 is about 409.3320096339.

The spelling of 68584681 in words is "sixty-eight million, five hundred eighty-four thousand, six hundred eighty-one".