68913533 has 8 divisors (see below), whose sum is σ = 75232248. Its totient is φ = 62740224.

The previous prime is 68913521. The next prime is 68913547. The reversal of 68913533 is 33531986.

It can be written as a sum of positive squares in 4 ways, for example, as 19731364 + 49182169 = 4442^2 + 7013^2 .

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 68913533 - 2¹² = 68909437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68913583) 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, 35360 + ... + 37257.

It is an arithmetic number, because the mean of its divisors is an integer number (9404031).

Almost surely, 2^68913533 is an apocalyptic number.

It is an amenable number.

68913533 is a deficient number, since it is larger than the sum of its proper divisors (6318715).

68913533 is a wasteful number, since it uses less digits than its factorization.

68913533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72703.

The product of its digits is 58320, while the sum is 38.

The square root of 68913533 is about 8301.4175295548. The cubic root of 68913533 is about 409.9851928025.

The spelling of 68913533 in words is "sixty-eight million, nine hundred thirteen thousand, five hundred thirty-three".