68981011 has 6 divisors (see below), whose sum is σ = 75822236. Its totient is φ = 62709900.

The previous prime is 68981009. The next prime is 68981023. The reversal of 68981011 is 11018986.

It is not a de Polignac number, because 68981011 - 2¹ = 68981009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68981041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284925 + ... + 285166.

Almost surely, 2^68981011 is an apocalyptic number.

68981011 is a deficient number, since it is larger than the sum of its proper divisors (6841225).

68981011 is a wasteful number, since it uses less digits than its factorization.

68981011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570113 (or 570102 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 68981011 is about 8305.4807807857. The cubic root of 68981011 is about 410.1189640904.

Adding to 68981011 its reverse (11018986), we get a palindrome (79999997).

The spelling of 68981011 in words is "sixty-eight million, nine hundred eighty-one thousand, eleven".