68821284 has 36 divisors (see below), whose sum is σ = 186802224. Its totient is φ = 19663056.

The previous prime is 68821273. The next prime is 68821289. The reversal of 68821284 is 48212886.

It is not an unprimeable number, because it can be changed into a prime (68821289) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57934 + ... + 59109.

Almost surely, 2^68821284 is an apocalyptic number.

It is an amenable number.

68821284 is an abundant number, since it is smaller than the sum of its proper divisors (117980940).

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

68821284 is a wasteful number, since it uses less digits than its factorization.

68821284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117064 (or 117055 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 68821284 is about 8295.8594491469. The cubic root of 68821284 is about 409.8021730539.

The spelling of 68821284 in words is "sixty-eight million, eight hundred twenty-one thousand, two hundred eighty-four".