68738405 has 8 divisors (see below), whose sum is σ = 83257632. Its totient is φ = 54476368.

The previous prime is 68738357. The next prime is 68738441. The reversal of 68738405 is 50483786.

It is a happy number.

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 68738405 - 2¹⁰ = 68737381 is a prime.

It is a super-3 number, since 3×68738405³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 63707 + ... + 64776.

It is an arithmetic number, because the mean of its divisors is an integer number (10407204).

Almost surely, 2^68738405 is an apocalyptic number.

It is an amenable number.

68738405 is a deficient number, since it is larger than the sum of its proper divisors (14519227).

68738405 is a wasteful number, since it uses less digits than its factorization.

68738405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128595.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 68738405 is about 8290.8627415969. The cubic root of 68738405 is about 409.6376036294.

The spelling of 68738405 in words is "sixty-eight million, seven hundred thirty-eight thousand, four hundred five".