68743906 has 16 divisors (see below), whose sum is σ = 128560320. Its totient is φ = 26783280.

The previous prime is 68743901. The next prime is 68743963. The reversal of 68743906 is 60934786.

It is a happy number.

It is a super-3 number, since 3×68743906³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (68743901) 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, 223041 + ... + 223348.

It is an arithmetic number, because the mean of its divisors is an integer number (8035020).

Almost surely, 2^68743906 is an apocalyptic number.

68743906 is a deficient number, since it is larger than the sum of its proper divisors (59816414).

68743906 is a wasteful number, since it uses less digits than its factorization.

68743906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446409.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 68743906 is about 8291.1944857180. The cubic root of 68743906 is about 409.6485308364.

The spelling of 68743906 in words is "sixty-eight million, seven hundred forty-three thousand, nine hundred six".