68881213 has 8 divisors (see below), whose sum is σ = 72745920. Its totient is φ = 65040480.

The previous prime is 68881187. The next prime is 68881223. The reversal of 68881213 is 31218886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68881213 is a prime.

It is a super-3 number, since 3×68881213³ (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 (68881223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81 + ... + 11737.

It is an arithmetic number, because the mean of its divisors is an integer number (9093240).

Almost surely, 2^68881213 is an apocalyptic number.

It is an amenable number.

68881213 is a deficient number, since it is larger than the sum of its proper divisors (3864707).

68881213 is a wasteful number, since it uses less digits than its factorization.

68881213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11987.

The product of its digits is 18432, while the sum is 37.

The square root of 68881213 is about 8299.4706457701. The cubic root of 68881213 is about 409.9210893147.

The spelling of 68881213 in words is "sixty-eight million, eight hundred eighty-one thousand, two hundred thirteen".