68511573 has 12 divisors (see below), whose sum is σ = 106573740. Its totient is φ = 42160896.

The previous prime is 68511529. The next prime is 68511607. The reversal of 68511573 is 37511586.

68511573 is a `hidden beast` number, since 6 + 85 + 1 + 1 + 573 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17489124 + 51022449 = 4182^2 + 7143^2 .

It is not a de Polignac number, because 68511573 - 2⁹ = 68511061 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68511523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292668 + ... + 292901.

It is an arithmetic number, because the mean of its divisors is an integer number (8881145).

Almost surely, 2^68511573 is an apocalyptic number.

It is an amenable number.

68511573 is a deficient number, since it is larger than the sum of its proper divisors (38062167).

68511573 is a wasteful number, since it uses less digits than its factorization.

68511573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585588 (or 585585 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 68511573 is about 8277.1717995944. The cubic root of 68511573 is about 409.1865151228.

The spelling of 68511573 in words is "sixty-eight million, five hundred eleven thousand, five hundred seventy-three".