68985539 has 8 divisors (see below), whose sum is σ = 79238400. Its totient is φ = 58832136.

The previous prime is 68985503. The next prime is 68985547. The reversal of 68985539 is 93558986.

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 68985539 - 2¹⁶ = 68920003 is a prime.

It is a super-2 number, since 2×68985539² = 9518009182241042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68985559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23369 + ... + 26154.

It is an arithmetic number, because the mean of its divisors is an integer number (9904800).

Almost surely, 2^68985539 is an apocalyptic number.

68985539 is a deficient number, since it is larger than the sum of its proper divisors (10252861).

68985539 is a wasteful number, since it uses less digits than its factorization.

68985539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49729.

The product of its digits is 2332800, while the sum is 53.

The square root of 68985539 is about 8305.7533673954. The cubic root of 68985539 is about 410.1279374683.

The spelling of 68985539 in words is "sixty-eight million, nine hundred eighty-five thousand, five hundred thirty-nine".