68610539 has 16 divisors (see below), whose sum is σ = 73852800. Its totient is φ = 63550656.

The previous prime is 68610517. The next prime is 68610547. The reversal of 68610539 is 93501686.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68610539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68613539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219047 + ... + 219359.

It is an arithmetic number, because the mean of its divisors is an integer number (4615800).

Almost surely, 2^68610539 is an apocalyptic number.

68610539 is a deficient number, since it is larger than the sum of its proper divisors (5242261).

68610539 is a wasteful number, since it uses less digits than its factorization.

68610539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 68610539 is about 8283.1478919551. The cubic root of 68610539 is about 409.3834456933.

The spelling of 68610539 in words is "sixty-eight million, six hundred ten thousand, five hundred thirty-nine".