68406256 has 20 divisors (see below), whose sum is σ = 134354992. Its totient is φ = 33734016.

The previous prime is 68406241. The next prime is 68406257. The reversal of 68406256 is 65260486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68406257) 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 3 ways as a sum of consecutive naturals, for example, 28116 + ... + 30451.

Almost surely, 2^68406256 is an apocalyptic number.

It is an amenable number.

68406256 is a deficient number, since it is larger than the sum of its proper divisors (65948736).

68406256 is a wasteful number, since it uses less digits than its factorization.

68406256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58648 (or 58642 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 68406256 is about 8270.8074575582. The cubic root of 68406256 is about 408.9767384144.

The spelling of 68406256 in words is "sixty-eight million, four hundred six thousand, two hundred fifty-six".