68769681 has 8 divisors (see below), whose sum is σ = 91949760. Its totient is φ = 45718032.

The previous prime is 68769667. The next prime is 68769691. The reversal of 68769681 is 18696786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68769681 - 2¹⁴ = 68753297 is a prime.

It is a super-2 number, since 2×68769681² = 9458538049683522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68769691) 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, 30850 + ... + 33003.

It is an arithmetic number, because the mean of its divisors is an integer number (11493720).

Almost surely, 2^68769681 is an apocalyptic number.

It is an amenable number.

68769681 is a deficient number, since it is larger than the sum of its proper divisors (23180079).

68769681 is a wasteful number, since it uses less digits than its factorization.

68769681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64215.

The product of its digits is 870912, while the sum is 51.

The square root of 68769681 is about 8292.7486999185. The cubic root of 68769681 is about 409.6997226299.

The spelling of 68769681 in words is "sixty-eight million, seven hundred sixty-nine thousand, six hundred eighty-one".