68144069 has 8 divisors (see below), whose sum is σ = 78005568. Its totient is φ = 58314240.

The previous prime is 68144059. The next prime is 68144071. The reversal of 68144069 is 96044186.

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

It is a cyclic number.

It is not a de Polignac number, because 68144069 - 2⁸ = 68143813 is a prime.

It is a super-2 number, since 2×68144069² = 9287228279753522, which contains 22 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 (68144029) 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, 3107 + ... + 12080.

It is an arithmetic number, because the mean of its divisors is an integer number (9750696).

Almost surely, 2^68144069 is an apocalyptic number.

It is an amenable number.

68144069 is a deficient number, since it is larger than the sum of its proper divisors (9861499).

68144069 is a wasteful number, since it uses less digits than its factorization.

68144069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15835.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68144069 is about 8254.9420954965. The cubic root of 68144069 is about 408.4535617462.

The spelling of 68144069 in words is "sixty-eight million, one hundred forty-four thousand, sixty-nine".