68204573 has 2 divisors, whose sum is σ = 68204574. Its totient is φ = 68204572.

The previous prime is 68204533. The next prime is 68204581. The reversal of 68204573 is 37540286.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45670564 + 22534009 = 6758^2 + 4747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68204573 is a prime.

It is a super-2 number, since 2×68204573² = 9303727556224658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68204533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34102286 + 34102287.

It is an arithmetic number, because the mean of its divisors is an integer number (34102287).

Almost surely, 2^68204573 is an apocalyptic number.

It is an amenable number.

68204573 is a deficient number, since it is larger than the sum of its proper divisors (1).

68204573 is an equidigital number, since it uses as much as digits as its factorization.

68204573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 68204573 is about 8258.6059961715. The cubic root of 68204573 is about 408.5744123898.

The spelling of 68204573 in words is "sixty-eight million, two hundred four thousand, five hundred seventy-three".