68448533 has 4 divisors (see below), whose sum is σ = 68552748. Its totient is φ = 68344320.

The previous prime is 68448521. The next prime is 68448539. The reversal of 68448533 is 33584486.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19909444 + 48539089 = 4462^2 + 6967^2 .

It is a cyclic number.

It is not a de Polignac number, because 68448533 - 2⁴ = 68448517 is a prime.

It is a super-3 number, since 3×68448533³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68448539) 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, 51116 + ... + 52437.

It is an arithmetic number, because the mean of its divisors is an integer number (17138187).

Almost surely, 2^68448533 is an apocalyptic number.

It is an amenable number.

68448533 is a deficient number, since it is larger than the sum of its proper divisors (104215).

68448533 is a wasteful number, since it uses less digits than its factorization.

68448533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104214.

The product of its digits is 276480, while the sum is 41.

The square root of 68448533 is about 8273.3628592006. The cubic root of 68448533 is about 409.0609741253.

The spelling of 68448533 in words is "sixty-eight million, four hundred forty-eight thousand, five hundred thirty-three".