68856870 has 32 divisors (see below), whose sum is σ = 165807072. Its totient is φ = 18300672.

The previous prime is 68856869. The next prime is 68856877. The reversal of 68856870 is 7865886.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68856877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5724 + ... + 13056.

It is an arithmetic number, because the mean of its divisors is an integer number (5181471).

Almost surely, 2^68856870 is an apocalyptic number.

68856870 is an abundant number, since it is smaller than the sum of its proper divisors (96950202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68856870 is a wasteful number, since it uses less digits than its factorization.

68856870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7656.

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 68856870 is about 8298.0039768609. The cubic root of 68856870 is about 409.8727941682.

The spelling of 68856870 in words is "sixty-eight million, eight hundred fifty-six thousand, eight hundred seventy".