68401533 has 8 divisors (see below), whose sum is σ = 92039200. Its totient is φ = 45182448.

The previous prime is 68401513. The next prime is 68401537. The reversal of 68401533 is 33510486.

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

It is not a de Polignac number, because 68401533 - 2¹⁰ = 68400509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68401533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68401537) 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, 104263 + ... + 104916.

It is an arithmetic number, because the mean of its divisors is an integer number (11504900).

Almost surely, 2^68401533 is an apocalyptic number.

It is an amenable number.

68401533 is a deficient number, since it is larger than the sum of its proper divisors (23637667).

68401533 is a wasteful number, since it uses less digits than its factorization.

68401533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209291.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 68401533 is about 8270.5219303258. The cubic root of 68401533 is about 408.9673258172.

The spelling of 68401533 in words is "sixty-eight million, four hundred one thousand, five hundred thirty-three".