68213872 has 20 divisors (see below), whose sum is σ = 133652160. Its totient is φ = 33723008.

The previous prime is 68213869. The next prime is 68213881. The reversal of 68213872 is 27831286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22528 + ... + 25375.

It is an arithmetic number, because the mean of its divisors is an integer number (6682608).

Almost surely, 2^68213872 is an apocalyptic number.

It is an amenable number.

68213872 is a deficient number, since it is larger than the sum of its proper divisors (65438288).

68213872 is a wasteful number, since it uses less digits than its factorization.

68213872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48000 (or 47994 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 68213872 is about 8259.1689654589. The cubic root of 68213872 is about 408.5929798682.

The spelling of 68213872 in words is "sixty-eight million, two hundred thirteen thousand, eight hundred seventy-two".