68421133 has 8 divisors (see below), whose sum is σ = 75541536. Its totient is φ = 61450800.

The previous prime is 68421097. The next prime is 68421163. The reversal of 68421133 is 33112486.

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

It is a cyclic number.

It is not a de Polignac number, because 68421133 - 2⁹ = 68420621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68421163) 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, 36558 + ... + 38383.

It is an arithmetic number, because the mean of its divisors is an integer number (9442692).

Almost surely, 2^68421133 is an apocalyptic number.

It is an amenable number.

68421133 is a deficient number, since it is larger than the sum of its proper divisors (7120403).

68421133 is a wasteful number, since it uses less digits than its factorization.

68421133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75035.

The product of its digits is 3456, while the sum is 28.

The square root of 68421133 is about 8271.7067767178. The cubic root of 68421133 is about 409.0063843672.

It can be divided in two parts, 68 and 421133, that added together give a square (421201 = 649²).

The spelling of 68421133 in words is "sixty-eight million, four hundred twenty-one thousand, one hundred thirty-three".