68618011 has 12 divisors (see below), whose sum is σ = 86198896. Its totient is φ = 53467920.

The previous prime is 68617951. The next prime is 68618023. The reversal of 68618011 is 11081686.

It is a happy number.

It is not a de Polignac number, because 68618011 - 2¹³ = 68609819 is a prime.

It is a super-2 number, since 2×68618011² = 9416862867192242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68618071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39660 + ... + 41353.

Almost surely, 2^68618011 is an apocalyptic number.

68618011 is a deficient number, since it is larger than the sum of its proper divisors (17580885).

68618011 is a wasteful number, since it uses less digits than its factorization.

68618011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81042 (or 81031 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 68618011 is about 8283.5989159302. The cubic root of 68618011 is about 409.3983063941.

Adding to 68618011 its reverse (11081686), we get a palindrome (79699697).

The spelling of 68618011 in words is "sixty-eight million, six hundred eighteen thousand, eleven".