68085534 has 64 divisors (see below), whose sum is σ = 153342720. Its totient is φ = 19979520.

The previous prime is 68085499. The next prime is 68085571. The reversal of 68085534 is 43558086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68085492 and 68085501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 393472 + ... + 393644.

It is an arithmetic number, because the mean of its divisors is an integer number (2395980).

Almost surely, 2^68085534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68085534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76671360).

68085534 is an abundant number, since it is smaller than the sum of its proper divisors (85257186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68085534 is a wasteful number, since it uses less digits than its factorization.

68085534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 68085534 is about 8251.3958819099. The cubic root of 68085534 is about 408.3365758824.

The spelling of 68085534 in words is "sixty-eight million, eighty-five thousand, five hundred thirty-four".