68512573 has 6 divisors (see below), whose sum is σ = 70794942. Its totient is φ = 66301560.

The previous prime is 68512571. The next prime is 68512579. The reversal of 68512573 is 37521586.

It can be written as a sum of positive squares in only one way, i.e., 68508729 + 3844 = 8277^2 + 62^2 .

It is not a de Polignac number, because 68512573 - 2¹ = 68512571 is a prime.

It is a super-3 number, since 3×68512573³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68512571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34686 + ... + 36607.

It is an arithmetic number, because the mean of its divisors is an integer number (11799157).

Almost surely, 2^68512573 is an apocalyptic number.

It is an amenable number.

68512573 is a deficient number, since it is larger than the sum of its proper divisors (2282369).

68512573 is an equidigital number, since it uses as much as digits as its factorization.

68512573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71355 (or 71324 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 68512573 is about 8277.2322064806. The cubic root of 68512573 is about 409.1885059520.

The spelling of 68512573 in words is "sixty-eight million, five hundred twelve thousand, five hundred seventy-three".