68752221 has 8 divisors (see below), whose sum is σ = 95655360. Its totient is φ = 43841952.

The previous prime is 68752213. The next prime is 68752261. The reversal of 68752221 is 12225786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68752221 - 2³ = 68752213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68752261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498136 + ... + 498273.

It is an arithmetic number, because the mean of its divisors is an integer number (11956920).

Almost surely, 2^68752221 is an apocalyptic number.

It is an amenable number.

68752221 is a deficient number, since it is larger than the sum of its proper divisors (26903139).

68752221 is a wasteful number, since it uses less digits than its factorization.

68752221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996435.

The product of its digits is 13440, while the sum is 33.

The square root of 68752221 is about 8291.6959061461. The cubic root of 68752221 is about 409.6650466772.

The spelling of 68752221 in words is "sixty-eight million, seven hundred fifty-two thousand, two hundred twenty-one".