68425857 has 16 divisors (see below), whose sum is σ = 103730880. Its totient is φ = 44555616.

The previous prime is 68425849. The next prime is 68425891. The reversal of 68425857 is 75852486.

68425857 is a `hidden beast` number, since 68 + 4 + 2 + 585 + 7 = 666.

It is not a de Polignac number, because 68425857 - 2³ = 68425849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68425807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28308 + ... + 30629.

It is an arithmetic number, because the mean of its divisors is an integer number (6483180).

Almost surely, 2^68425857 is an apocalyptic number.

It is an amenable number.

68425857 is a deficient number, since it is larger than the sum of its proper divisors (35305023).

68425857 is a wasteful number, since it uses less digits than its factorization.

68425857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58989 (or 58983 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 68425857 is about 8271.9923234974. The cubic root of 68425857 is about 409.0157971593.

The spelling of 68425857 in words is "sixty-eight million, four hundred twenty-five thousand, eight hundred fifty-seven".