68256620 has 12 divisors (see below), whose sum is σ = 143338944. Its totient is φ = 27302640.

The previous prime is 68256613. The next prime is 68256623. The reversal of 68256620 is 2665286.

It is not an unprimeable number, because it can be changed into a prime (68256623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706396 + ... + 1706435.

It is an arithmetic number, because the mean of its divisors is an integer number (11944912).

Almost surely, 2^68256620 is an apocalyptic number.

It is an amenable number.

68256620 is an abundant number, since it is smaller than the sum of its proper divisors (75082324).

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

68256620 is a wasteful number, since it uses less digits than its factorization.

68256620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412840 (or 3412838 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 68256620 is about 8261.7564718406. The cubic root of 68256620 is about 408.6783138569.

The spelling of 68256620 in words is "sixty-eight million, two hundred fifty-six thousand, six hundred twenty".