68516413 has 16 divisors (see below), whose sum is σ = 83566720. Its totient is φ = 54867456.

The previous prime is 68516407. The next prime is 68516423. The reversal of 68516413 is 31461586.

It is a happy number.

It is not a de Polignac number, because 68516413 - 2⁹ = 68515901 is a prime.

It is a super-3 number, since 3×68516413³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68516423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6181 + ... + 13237.

It is an arithmetic number, because the mean of its divisors is an integer number (5222920).

Almost surely, 2^68516413 is an apocalyptic number.

It is an amenable number.

68516413 is a deficient number, since it is larger than the sum of its proper divisors (15050307).

68516413 is a wasteful number, since it uses less digits than its factorization.

68516413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7156.

The product of its digits is 17280, while the sum is 34.

The square root of 68516413 is about 8277.4641648273. The cubic root of 68516413 is about 409.1961505562.

Adding to 68516413 its reverse (31461586), we get a palindrome (99977999).

The spelling of 68516413 in words is "sixty-eight million, five hundred sixteen thousand, four hundred thirteen".