68141533 has 4 divisors (see below), whose sum is σ = 68158908. Its totient is φ = 68124160.

The previous prime is 68141509. The next prime is 68141537. The reversal of 68141533 is 33514186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33514186 = 2 ⋅16757093.

It can be written as a sum of positive squares in 2 ways, for example, as 21874329 + 46267204 = 4677^2 + 6802^2 .

It is a cyclic number.

It is not a de Polignac number, because 68141533 - 2¹⁷ = 68010461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68141495 and 68141504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68141537) 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, 285 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (17039727).

Almost surely, 2^68141533 is an apocalyptic number.

It is an amenable number.

68141533 is a deficient number, since it is larger than the sum of its proper divisors (17375).

68141533 is a wasteful number, since it uses less digits than its factorization.

68141533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17374.

The product of its digits is 8640, while the sum is 31.

The square root of 68141533 is about 8254.7884891135. The cubic root of 68141533 is about 408.4484947800.

The spelling of 68141533 in words is "sixty-eight million, one hundred forty-one thousand, five hundred thirty-three".